Showing 10 items matching "terrain following"
-
Moorabbin Air MuseumBook - AGARD reports, Guidance and Control Design Considerations for Low Altitude and Terminal -Area Flight
... ...Terrain following...Operational problems and considerations Terrain following Terminal area and landing considerations Weapon delivery System integration Overview of technology for operational safety in helicopters & VTOL aircraft, circa 1977 Guidance and Control Design Considerations for Low Altitude and Terminal -Area Flight Book AGARD reports ...Overview of technology for operational safety in helicopters & VTOL aircraft, circa 1977non-fictionOverview of technology for operational safety in helicopters & VTOL aircraft, circa 1977operational problems and considerations, terrain following, terminal area and landing considerations, weapon delivery, system integration -
Kiewa Valley Historical SocietyPhotographs – Set of 9 black and white photographs and photocopies of original photographs depicting the early days of Bogong Village during the 1940’s, circa 1940's
... Pictorial history of the early years of Bogong Village including one photo taken following the devastating fires of 1939. Photos show the terrain in which Bogong Village was built, the early construction used for the temporary buildings and the housing and the amount of infrastructure required to accommodate the needs of the residents of the area including workers, their families and other support staff. ...Bogong Village, which was known as “The Junction”, is well recorded. The first tent camp was at the junction of Pretty Valley and Rocky Valley streams in the early 40’s. Further downstream were the sawmill, stables and blacksmith’s forge. Horses were the main mode of transport in the early days. The road to Bogong had reached the lookout spur just beyond Roper’s Spur track just before the 1939 fires. The early forties saw rapid growth of the village, with single and married men’s quarters, workshops, mess huts and administrative offices. The facilities necessary for communal living were quickly in place- a post office, police station, co-op store, medical centre, community hall/theatre, tennis courts and school. Much of the temporary accommodation that housed groups such as the Albion Quarrying Company were in the area now under water.Pictorial history of the early years of Bogong Village including one photo taken following the devastating fires of 1939. Photos show the terrain in which Bogong Village was built, the early construction used for the temporary buildings and the housing and the amount of infrastructure required to accommodate the needs of the residents of the area including workers, their families and other support staff. Set of 9 black and white photographs and photocopies of photographs depicting early buildings at Bogong Village . Photos show very early construction buildings as well as the village in various weather conditions, including snowing and after bush fires. (some official SECV photographs) 1. Bogong Village in heavy snow 2. Bogong Township during heavy snow (SECV Official Photo) 3. VIP Lodge at Bogong in the snow 4. Bogong Village - circa 1940’s 5. Bogong Village under street lights 6. Lewis Construction Camp (SECV Official Photo) 7. Albion Quarrying Co. Camp (SECV Official Photo) 8. Tent camp and early buildings following 1939 fires 9. Typical house – Bogong Village 1. Handwritten under photo – August 1948 2. Printed under photo: STATE ELECTRICITY COMMISSION OF VICTORIA Date: 25.8.48 Time: 9am No:K 4680 Kiewa Hydro-Electric Works. Bogong Township 3. Handwritten on back of photo- V.I.P. Lodge, Bogong 4 – 5. No markings 6. Printed under photo: STATE ELECTRICITY COMMISSION OF VICTORIA Date: 28.11.40 Time: 1.40pm No:K284 Kiewa Hydro-Electric Works. Lewis Construction Camp 7. Printed under photo: STATE ELECTRICITY COMMISSION OF VICTORIA Date: 11.1.41 Time: 10.40am No:K294 Kiewa Hydro-Electric Works. Albion Quarrying Co. Camp – Bogong. Handwritten on back of photo: On the floor of the present dam 8. No markings 9. Printed under photo: STATE ELECTRICITY COMMISSION OF VICTORIA Date: 11.1.46 Time: 1.23pm No:K2181 Kiewa Hydro-Electric Works. Bogong – Typical House bogong village; 1939 fires; kiewa hydro electric scheme; -
Kiewa Valley Historical SocietyPhotograph – Photocopy of black and white photograph of Bogong Creek Race Line. 17/1/51, 17/01/1951
... following years when work on the High Plains was not practicable. In January, 1951 the special trimming machine, the special slip form and concrete mixing and placing equipment was put into service. A shortage of cement caused some delays as well as a sudden financial recession. The race line was completed and put into service in 1952. An historical record showing the machinery used during this time, the number of workers and supervisors involved and the mountainous terrain ...A start on the construction of Bogong Creek race line was made at the commencement of winter in 1948. Work proceeded in the following years when work on the High Plains was not practicable. In January, 1951 the special trimming machine, the special slip form and concrete mixing and placing equipment was put into service. A shortage of cement caused some delays as well as a sudden financial recession. The race line was completed and put into service in 1952.An historical record showing the machinery used during this time, the number of workers and supervisors involved and the mountainous terrain where they worked. It also demonstrates the OH&S of the period with workers mostly in street clothing with no hard hats or other safety equipment. Several workers can be seen working shirtless or in singlets.Photocopy of a black and white SECV photograph No: K 6209 labelled Bogong Creek Race Line ch. 1700. Depicting large group of workers and supervisors working at the site. Dated 17/1/52Printed underneath the photograph: STATE ELECTRICITY COMMISSION OF VICTORIA Date: 17/1/51 Time: 10.30am No: K 6209 Kiewa Hydro-Electric Works Bogong Creek Race Line ch. 1700 bogong creek raceline; secv; kiewa hydro electric scheme; -
Kiewa Valley Historical SocietyPhotograph of Bogong Creek Raceline, Bogong Creek Raceline, circa 1951
... following years when work on the High Plains was not practicable. In January, 1951 the special trimming machine, the special slip form and concrete mixing and placing equipment was put into service. A shortage of cement caused some delays as well as a sudden financial recession. The race line was completed and put into service in 1952. An historical record showing the machinery used , the number of workers needed at any one time ( about 16 in this photo) and the mountainous terrain ...A start on the construction of Bogong Creek race line was made at the commencement of winter in 1948. Work proceeded in the following years when work on the High Plains was not practicable. In January, 1951 the special trimming machine, the special slip form and concrete mixing and placing equipment was put into service. A shortage of cement caused some delays as well as a sudden financial recession. The race line was completed and put into service in 1952. An historical record showing the machinery used , the number of workers needed at any one time ( about 16 in this photo) and the mountainous terrain of the area. Black and white photograph taken during construction of Bogong Creek Raceline, showing the type of machine used for the formation of the concrete lining, the mountainous terrain, a number of workmen and a snow capped Mt. Bogong in the backgroundHandwritten on the back of photograph in black ink "Bogong Creek race line".race line, cement, machinery, bogong -
Australian Commando Association - VictoriaBook, Commando White Diamond: Unt History of the 2/8th Australian Commando Squadron
... terrain reports and located the enemy. Once patrols had gathered information, they were free to make a ‘strike’ against the Japanese by setting an ambush or taking a prisoner. These raids were very effective, as they forced the Japanese to deploy troops to their rear areas, removing men from the front created by the infantry. Following ...The detailed history of the No.8 Independent Commando Company during World War II. Plastic protective cover over the book. The 2/8th Independent Company was formed at Wilson’s Promontory, Victoria, in July 1942 and travelled to Yandina, in Queensland, in September. While the other seven independent companies saw action in the islands off Australian and in New Guinea, the 2/8th spent most of the next two years based at Adelaide River, in the Northern Territory. While it was in the Territory, the independent companies underwent a series of reorganisations and the name of the 2/8th was changed from the 2/8th Independent Company to the 2/8th Cavalry (Commando) Squadron. This name was later simplified to just commando squadron. In July 1944, after years of waiting, the squadron left the Territory and sailed from Townsville to Lae, via Milne Bay. While at Lae, the squadron received an intake of 70 men from the 2/8th from the 2/3rd, 2/5th and 2/6th Cavalry (Commando) Squadrons, many of whom were veterans of the earlier New Guinea campaigns. Their experience was no doubt a useful reserve that would have been called upon during the 2/8th’s subsequent campaign in Bougainville. Others though, were able to implement some of their commando training when a small group from the 2/8th they made a secret landing on New Britain. Towards the end of the 1944 the 5th Division was preparing to make a landing at Jacquinot Bay in New Britain. Part of these preparations included landing a small group of officers from the division at Jacquinot Bay to make a secret reconnaissance of the potential landing site. As Jacquinot Bay was still in Japanese controlled territory, ‘C’ Troop from the 2/8th provided the protection for the reconnaissance party by establishing a position on the beach and by patrolling the surrounding country. Everything went well and the 5th Division later landed at Jacquinot Bay in November. The squadron too was on the move, and in October it sailed to Torokina, the main Australian base on Bougainville, where it joined the II Australian Corps. The campaign on Bougainville was dived into three areas, the Central, Northern and Southern Sectors. The 2/8th served in the latter two areas. The 2/8th made the first move of the Australian campaign in the Northern Sector, by patrolling from Torokina to Kuraio Mission and Amun once a week. The squadron did this from the second week of November unit the second week of December. The 2/8th was then transferred to the Southern Sector. The main battle for Bougainville was fought in the Southern Sector, as the 3rd Division advanced towards Buin – the main Japanese base on the island. As the division’s infantry brigades advanced along the coast, the 2/8th’s task was to protect their flank by conducting forward reconnaissance patrols, harassing the Japanese with raids and ambushes and conducting a form of guerrilla warfare. The squadron had a long campaign. For nine months, from the end of December until August 1945, the troopers were in action the whole time. After securing the Jaba River, they moved inland, first to Sovele Mission, then the villages of Opai, Nihero and Morokaimoro. They had reached Kilipaijino by the end of the war. Each village taken became a patrol base. Patrols were usually limited to two sections, although up to six sections could be operating at a time. Patrols generally lasted four to six days, but nine-day patrols were not unknown. The squadron collected and collated track information, terrain reports and located the enemy. Once patrols had gathered information, they were free to make a ‘strike’ against the Japanese by setting an ambush or taking a prisoner. These raids were very effective, as they forced the Japanese to deploy troops to their rear areas, removing men from the front created by the infantry. Following Japan’s surrender and the end of the war, the ranks of the squadron thinned quickly as men were discharged or were transferred to other units. For those who were left, the squadron returned to Australia at the end of December. In mid January 1946, at Liverpool, the 2/8th Commando Squadron was disbanded.non-fictionThe detailed history of the No.8 Independent Commando Company during World War II. Plastic protective cover over the book. The 2/8th Independent Company was formed at Wilson’s Promontory, Victoria, in July 1942 and travelled to Yandina, in Queensland, in September. While the other seven independent companies saw action in the islands off Australian and in New Guinea, the 2/8th spent most of the next two years based at Adelaide River, in the Northern Territory. While it was in the Territory, the independent companies underwent a series of reorganisations and the name of the 2/8th was changed from the 2/8th Independent Company to the 2/8th Cavalry (Commando) Squadron. This name was later simplified to just commando squadron. In July 1944, after years of waiting, the squadron left the Territory and sailed from Townsville to Lae, via Milne Bay. While at Lae, the squadron received an intake of 70 men from the 2/8th from the 2/3rd, 2/5th and 2/6th Cavalry (Commando) Squadrons, many of whom were veterans of the earlier New Guinea campaigns. Their experience was no doubt a useful reserve that would have been called upon during the 2/8th’s subsequent campaign in Bougainville. Others though, were able to implement some of their commando training when a small group from the 2/8th they made a secret landing on New Britain. Towards the end of the 1944 the 5th Division was preparing to make a landing at Jacquinot Bay in New Britain. Part of these preparations included landing a small group of officers from the division at Jacquinot Bay to make a secret reconnaissance of the potential landing site. As Jacquinot Bay was still in Japanese controlled territory, ‘C’ Troop from the 2/8th provided the protection for the reconnaissance party by establishing a position on the beach and by patrolling the surrounding country. Everything went well and the 5th Division later landed at Jacquinot Bay in November. The squadron too was on the move, and in October it sailed to Torokina, the main Australian base on Bougainville, where it joined the II Australian Corps. The campaign on Bougainville was dived into three areas, the Central, Northern and Southern Sectors. The 2/8th served in the latter two areas. The 2/8th made the first move of the Australian campaign in the Northern Sector, by patrolling from Torokina to Kuraio Mission and Amun once a week. The squadron did this from the second week of November unit the second week of December. The 2/8th was then transferred to the Southern Sector. The main battle for Bougainville was fought in the Southern Sector, as the 3rd Division advanced towards Buin – the main Japanese base on the island. As the division’s infantry brigades advanced along the coast, the 2/8th’s task was to protect their flank by conducting forward reconnaissance patrols, harassing the Japanese with raids and ambushes and conducting a form of guerrilla warfare. The squadron had a long campaign. For nine months, from the end of December until August 1945, the troopers were in action the whole time. After securing the Jaba River, they moved inland, first to Sovele Mission, then the villages of Opai, Nihero and Morokaimoro. They had reached Kilipaijino by the end of the war. Each village taken became a patrol base. Patrols were usually limited to two sections, although up to six sections could be operating at a time. Patrols generally lasted four to six days, but nine-day patrols were not unknown. The squadron collected and collated track information, terrain reports and located the enemy. Once patrols had gathered information, they were free to make a ‘strike’ against the Japanese by setting an ambush or taking a prisoner. These raids were very effective, as they forced the Japanese to deploy troops to their rear areas, removing men from the front created by the infantry. Following Japan’s surrender and the end of the war, the ranks of the squadron thinned quickly as men were discharged or were transferred to other units. For those who were left, the squadron returned to Australia at the end of December. In mid January 1946, at Liverpool, the 2/8th Commando Squadron was disbanded. -
Department of Energy, Environment and Climate ActionRappel model with protective equipment, harness and rope drop bag
... following two fire seasons but lapsed after concerns from the Civil Aviation Safety Authority (CASA) about the stability of the small and underpowered Bell 47G. Later in 1982, after nearly 18 years absence, the Commission recommenced rappelling operations using larger and more powerful National Safety Council (NSCA) Bell 212 and Bell 412 helicopters based in Sale, Gippsland. During the 1983 bushfires, a specially trained and equipped FCV crew rappelled by rope from a hovering NSCA helicopter to suppress a small fire in remote terrain...following two fire seasons but lapsed after concerns from the Civil Aviation Safety Authority (CASA) about the stability of the small and underpowered Bell 47G. Later in 1982, after nearly 18 years absence, the Commission recommenced rappelling operations using larger and more powerful National Safety Council (NSCA) Bell 212 and Bell 412 helicopters based in Sale, Gippsland. During the 1983 bushfires, a specially trained and equipped FCV crew rappelled by rope from a hovering NSCA helicopter to suppress a small fire in remote terrain ...Based on the earlier successful tests with the RAAF Dragonfly in 1948-49, together with the effective use of aircraft during the extensive Gippsland bushfires in March 1965, the Forests Commission took the plunge and contracted its own dedicated Bell 47G in the summer of 1965-66. This was an Australian first for any forest or bushfire agency. Rappelling trials at Snowy Plains and Tallangatta soon followed, which led to operations based at Heyfield with a two-man crew to quickly attack small fires in remote locations. The Heyfield rappel crew was another Australian first and remained in place for the following two fire seasons but lapsed after concerns from the Civil Aviation Safety Authority (CASA) about the stability of the small and underpowered Bell 47G. Later in 1982, after nearly 18 years absence, the Commission recommenced rappelling operations using larger and more powerful National Safety Council (NSCA) Bell 212 and Bell 412 helicopters based in Sale, Gippsland. During the 1983 bushfires, a specially trained and equipped FCV crew rappelled by rope from a hovering NSCA helicopter to suppress a small fire in remote terrain in the Orbost Forest District. Rappel model with protective equipment, harness and rope drop bagforests commission victoria (fcv), bushfire, bushfire aviation, safety equipment -
Bendigo Military MuseumPhotograph - Army Survey Regiment’s Officers, Warrant Officers and Sergeants and Squadrons, at Fortuna, Bendigo, 1982
... Cartographic Squadron was responsible for the production of the following military products: Joint Operation Graphics, small-scale RAAF Air Charts, large-scale topographic line maps and orthophotomaps. Cartographic technician tasks were scribing, compiling, retouching, masking, type setting, type stickup, terrain embossing, correcting and proving quality control. ...Cartographic Squadron was responsible for the production of the following military products: Joint Operation Graphics, small-scale RAAF Air Charts, large-scale topographic line maps and orthophotomaps. Cartographic technician tasks were scribing, compiling, retouching, masking, type setting, type stickup, terrain embossing, correcting and proving quality control. ...This is a set of six staff photographs of the Army Survey Regiment’s Officers, Warrant Officers and Sergeants, and each of its four Squadrons at Fortuna, Bendigo in December 1982. Note - Air Survey Squadron’s photo was probably taken in July 1982 as they appear in winter dress. Air Survey Squadron was responsible for aerotriangulation, photogrammetric feature extraction and the AUTOMAP 1 system. Typical tasks were flight planning the acquisition of aerial photography, pugging, mensuration and block adjustments, photogrammetric extraction of topographic features from aerial photography, digital feature editing, map compilation, operating the scanner/plotter, operating the AUTOMAP 1 system and computer programming by civilians. Cartographic Squadron was responsible for the production of the following military products: Joint Operation Graphics, small-scale RAAF Air Charts, large-scale topographic line maps and orthophotomaps. Cartographic technician tasks were scribing, compiling, retouching, masking, type setting, type stickup, terrain embossing, correcting and proving quality control. Headquarters Squadron was responsible for the planning and coordination of map production and contracts. It also performed administrative and support functions such as personnel administration, pay, finance, transportation, records, map Library, kitchens, messes and facility maintenance. It was staffed by Army personnel from RASvy, RACT, AACC, RAAOC and RAEME corps. Other supporting staff at this time included the RAAF Liaison Officer, RAN Liaison Officer and several civilians employed in administration, the Q-Store and grounds maintenance. A component of the Army Svy Regt’s cartographic map production was carried out by the Detachment, a sub-unit located at Bonegilla next to the School of Military Survey. Lithographic Squadron was responsible for the reproduction of map materials and printing of military map products. The main tasks undertaken by photographic technicians were photographic enlargements, reductions and duplication of map reproduction material and processing of aerial photography. Printing technician tasks included platemaking, offset printing, map stock despatching and proofing.This is a set of six staff photographs of the Army Survey Regiment’s Officers, Warrant Officers and Sergeants, and its four Squadrons, at Fortuna, Bendigo, 1982. The black and white photographs were printed on photographic paper and are part of the Army Survey Regiment’s Collection. The photograph was scanned at 300 dpi. No personnel are identified. No personnel are identified. .1P – Annotated on front “OFFICERS MESS DEC ’82” .2P – Annotated on back “SGTS MESS DEC ’82” .4P– Annotated on front “CARTO SQN DEC ’82” .5P– Annotated on front “HQ SQN DEC ’82”royal australian survey corps, rasvy, army survey regiment, army svy regt, fortuna, asr, air survey, carto, litho -
Bendigo Military MuseumPhotograph - Multiplex mechanical stereoplotting equipment, Army Survey Regiment, Fortuna Bendigo, c1950s
... following year, to accelerate map production output covering CMF training areas at 1:25,000 map scale. Multiplex plotting was a productive advancement replacing the ‘Arundel’ method of graphical plotting planimetric detail that was expensive and slow, especially in timbered mountainous terrain. ...following year, to accelerate map production output covering CMF training areas at 1:25,000 map scale. Multiplex plotting was a productive advancement replacing the ‘Arundel’ method of graphical plotting planimetric detail that was expensive and slow, especially in timbered mountainous terrain. ...This is a set of five photographs of Multiplex mechanical stereoplotting equipment at the Army Survey Regiment, Fortuna Bendigo. c1950s. Multiplex equipment was imported from the UK in 1951 and introduced in the following year, to accelerate map production output covering CMF training areas at 1:25,000 map scale. Multiplex plotting was a productive advancement replacing the ‘Arundel’ method of graphical plotting planimetric detail that was expensive and slow, especially in timbered mountainous terrain. Air photos were made into small diapositives and mounted on racks in the exact position relative to when the aerial photos were taken. The technicians operated the Multiplex in a darkened room, with one photo projected with a green filter and the other through a red filter to form a 3D view of the overlapping photos. The 3D model projected onto a platen, which was a small platform that was raised up and down. The technician viewed the 3D image with special glasses fitted with red and green lenses. In the centre of the platen was a small pinhole that served as a floating mark, with a vertical pencil located exactly below the pinhole. This tracing table was moved to follow the topographic feature or contour line and draw it on the paper underneath. The technician raising or lowering the platform’s floating mark to match the height of the 3D terrain. It also replaced the slotted template method of mechanical adjustment of strips of aerial photography, however was restricted to each strip rather than between strips in the block. Although the Multiplex was phased out of production in 1968, it was used in the training of photogrammetry and aero-triangulation at the School of Military Survey located at Bonegilla, Victoria until the early 1990s. The history of the Multiplex is covered in more detail with additional historic photographs, in pages 50 to 51 of Valerie Lovejoy’s book 'Mapmakers of Fortuna – A history of the Army Survey Regiment’ ISBN: 0-646-42120-4.This is a set of five photographs of Multiplex mechanical stereoplotting equipment at the Army Survey Regiment, Fortuna, Bendigo. c1950s. The photographs were printed on photographic paper and are part of the Army Survey Regiment’s Collection. The photographs were scanned at 300 dpi. .1) - Photo, black & white, c1950s, unidentified personnel operating Multiplex equipment. .2) - Photo, black & white, c1950s, Multiplex equipment. .3) - Photo, black & white, c1950s, Multiplex components identified. .4) - Photo, black & white, c1950s, Multiplex optical components. .5) - Photo, black & white, c1950s. Unidentified technician laying down individual Multiplex plots..1P to .2P, .4P – No annotations. .3P annotations identifying Multiplex components on front of photo. .5P annotated on front ‘Lay down of individual Multiplex plots at 1/14000 to framework of master grid to form Composite Compilation Sheet – Material Duralex.’royal australian survey corps, rasvy, army survey regiment, army svy regt, fortuna, asr, photogrammetry -
Bendigo Military MuseumInstrument - Multiplex Unit Projector, Williamson Manufacturing Co, Circa 1950
... following year, to accelerate map production output covering CMF training areas at 1:25,000 map scale. Multiplex plotting was a productive advancement replacing the ‘Arundel’ method of graphical plotting planimetric detail that was expensive and slow, especially in timbered mountainous terrain. ...following year, to accelerate map production output covering CMF training areas at 1:25,000 map scale. Multiplex plotting was a productive advancement replacing the ‘Arundel’ method of graphical plotting planimetric detail that was expensive and slow, especially in timbered mountainous terrain. ...Multiplex mechanical stereoplotting equipment was used at the Army Survey Regiment, Fortuna Bendigo. c1950s. Multiplex equipment was imported from the UK in 1951 and introduced in the following year, to accelerate map production output covering CMF training areas at 1:25,000 map scale. Multiplex plotting was a productive advancement replacing the ‘Arundel’ method of graphical plotting planimetric detail that was expensive and slow, especially in timbered mountainous terrain. Air photos were made into small diapositives and mounted on racks in the exact position relative to when the aerial photos were taken. The technicians operated the Multiplex in a darkened room, with one photo projected with a green filter and the other through a red filter to form a 3D view of the overlapping photos. The 3D model projected onto a platen, which was a small platform that was raised up and down. The technician viewed the 3D image with special glasses fitted with red and green lenses. In the centre of the platen was a small pinhole that served as a floating mark, with a vertical pencil located exactly below the pinhole. This tracing table was moved to follow the topographic feature or contour line and draw it on the paper underneath. The technician raising or lowering the platform’s floating mark to match the height of the 3D terrain. It also replaced the slotted template method of mechanical adjustment of strips of aerial photography, however was restricted to each strip rather than between strips in the block. Although the Multiplex was phased out of production in 1968, it was used in the training of photogrammetry and aero-triangulation at the School of Military Survey located at Bonegilla, Victoria until the early 1990s. The history of the Multiplex is covered in more detail with additional historic photographs, in pages 50 to 51 of Valerie Lovejoy’s book 'Mapmakers of Fortuna – A history of the Army Survey Regiment’ ISBN: 0-646-42120-4. This instrument is only one of the projectors of a set and is unfortunately missing its platen, coloured filters and coloured glasses. A cardboard set of glasses is included as an example. Another Multiplex instrument is in the collection as Item 9039.4A black wooden box containing a Multiplex Unit Projector (incomplete). The Multiplex has a Lamp Head, Barrel Housing, Body of the Projector and a Platen which is missing. .1 Protective wooden box .2 Multiplex Instrument .3 Multiplex Instrument Parts Diagram .4 A bank of Multiplex projectors in operation WILLIAMSON MANUFACTURING CO, PHOTOGRAPHIC ENGINEERS, SERIAL NUMBER 3437, TYPE MPC, LITCHFIELD GARDENS, LONDON AND READING.royal australian survey corps, rasvy, fortuna, army survey regiment, army svy regt -
Bendigo Military MuseumInstrument - Multiplex Unit Projector, Williamson Manufacturing Co, Circa 1950
... following year, to accelerate map production output covering CMF training areas at 1:25,000 map scale. Multiplex plotting was a productive advancement replacing the ‘Arundel’ method of graphical plotting planimetric detail that was expensive and slow, especially in timbered mountainous terrain. ...following year, to accelerate map production output covering CMF training areas at 1:25,000 map scale. Multiplex plotting was a productive advancement replacing the ‘Arundel’ method of graphical plotting planimetric detail that was expensive and slow, especially in timbered mountainous terrain. ...Multiplex mechanical stereoplotting equipment was used at the Army Survey Regiment, Fortuna Bendigo. c1950s. Multiplex equipment was imported from the UK in 1951 and introduced in the following year, to accelerate map production output covering CMF training areas at 1:25,000 map scale. Multiplex plotting was a productive advancement replacing the ‘Arundel’ method of graphical plotting planimetric detail that was expensive and slow, especially in timbered mountainous terrain. Air photos were made into small diapositives and mounted on racks in the exact position relative to when the aerial photos were taken. The technicians operated the Multiplex in a darkened room, with one photo projected with a green filter and the other through a red filter to form a 3D view of the overlapping photos. The 3D model projected onto a platen, which was a small platform that was raised up and down. The technician viewed the 3D image with special glasses fitted with red and green lenses. In the centre of the platen was a small pinhole that served as a floating mark, with a vertical pencil located exactly below the pinhole. This tracing table was moved to follow the topographic feature or contour line and draw it on the paper underneath. The technician raising or lowering the platform’s floating mark to match the height of the 3D terrain. It also replaced the slotted template method of mechanical adjustment of strips of aerial photography, however was restricted to each strip rather than between strips in the block. Although the Multiplex was phased out of production in 1968, it was used in the training of photogrammetry and aero-triangulation at the School of Military Survey located at Bonegilla, Victoria until the early 1990s. The history of the Multiplex is covered in more detail with additional historic photographs, in pages 50 to 51 of Valerie Lovejoy’s book 'Mapmakers of Fortuna – A history of the Army Survey Regiment’ ISBN: 0-646-42120-4. This instrument is only one of the projectors of a set and is unfortunately missing its coloured filters and coloured glasses. Another instrument is in the collection as Item 9003.4A black wooden box containing a Multiplex Unit Projector (incomplete). The Multiplex has a Lamp Head, Barrel Housing, Body of the Projector and a Platen. .1 Protective wooden box .2 Multiplex Instrument .3 Multiplex Instrument Parts Diagram .4 A bank of Multiplex projectors in operation WILLIAMSON MANUFACTURING CO, PHOTOGRAPHIC ENGINEERS, SERIAL NUMBER 3187, TYPE MPC, LITCHFIELD GARDENS, LONDON AND READING.royal australian survey corps, rasvy, fortuna, army survey regiment, army svy regt
