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Bendigo Military Museum
Photograph - Royal Australian Survey Corps Surveyors in the Field – North Queensland, 1958
... theodolites to observe horizontal and vertical angles and chains... theodolites to observe horizontal and vertical angles and chains ...This is a set of seven photographs of surveyors and support staff in the field undertaking duties in North Queensland in 1958. The surveyors were employed in the establishment of mapping and geodetic control. In this era surveyors used theodolites to observe horizontal and vertical angles and chains to measure base line distances between survey stations. Bob Skitch shown in photos .4P to .6P was in the 2nd year of his career in the Australian Army. He achieved the rank of Lieutenant Colonel and his last appointment was the CO of the Army Survey Regiment from 1976 to 1980. The annotation on the back of photo .5P ‘Black foreground is where Bob Skitch boiled billy and started a grass fire’.This is a set of seven photographs of surveyors and support staff in the field undertaking duties in North Queensland in 1958. 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, colour, 1958. Surveyor in Nth QLD enjoying a bath. L to R: Don Cocker, Bob Thompson. .2) - Photo, colour, 1958. Don Cocker surveyor in Nth QLD, enjoying a bath. .3) - Photo, colour, 1958. Surveyors Nth QLD undertaking survey observations, using MRA1 tellurometer to measure base-line distances. L to R: Len Davies, Lou Sommer, John Van De Graff. MRA1 was covered to stop overheating. .4) - Photo, colour, 1958. Surveyors south of Richmond, QLD digging holes for the erection of a Bilby observation tower. L to R: John Van De Graff, Bob Skitch, Kev Moody, Mal Hayes, Don Gray .5) - Photo, colour, 1958. Surveyors south of Richmond, QLD erecting a Bilby observation tower. L to R: Tom Royle, Bob Skitch (on ground level), Mal Hayes. .6) - Photo, colour, 1958. Surveyors south of Richmond, QLD erecting a Bilby observation tower. L to R: Tom Royle, Bob Skitch, Mal Hayes, Jim McGill (on ground level). .7) - Photo, colour, 1958. Surveyors south of Richmond, QLD undertaking survey measurements from a Bilby observation tower..1P to .7P annotated on back – personnel names, the year and the location. Annotated on back of .5P ‘Black foreground is where Bob Skitch boiled billy and started a grass fire’.royal australian survey corps, rasvy, army survey regiment, asr, army svy regt, fortuna, surveying -
Bendigo Military Museum
Photograph - Royal Australian Survey Corps Surveyors in the Field – Victoria, 1956 - 1958
... horizontal and vertical angles and chains to measure base line... horizontal and vertical angles and chains to measure base line ...This is a set of two photographs of surveyors and support staff in the field undertaking tasks in Victoria 1956 – 1958. The surveyors were employed in the establishment of mapping and geodetic control. In this era surveyors used theodolites to observe horizontal and vertical angles and chains to measure base line distances between survey stations. This is a set of 23 photographs of surveyors and support staff in the field undertaking duties in Victoria 1956 – 1958. 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, colour, 1956. Surveyors enjoying a tea break. L to R: Tom Gilbert (cook), Barry Broad, Tony Slattery, John Van De Graff. Taken at Boonoonar, a locality south of Mildura. .2) - Photo, colour, 1958. Surveyors taking a break from driving. L to R: Leo Bub, Bob Thompson. Taken at Puckapunyal..1P to .2P annotated on back – personnel names, the year and the location. royal australian survey corps, rasvy, army survey regiment, asr, army svy regt, fortuna, surveying -
Bendigo Military Museum
Photograph - Royal Australian Survey Corps Surveyors in the Field – Northern Territory and Queensland, 1959 – 1960
... used theodolites to observe horizontal and vertical angles... used theodolites to observe horizontal and vertical angles ...This is a set of 10 photographs of surveyors and support staff in the field undertaking duties in the Northern Territory and North Queensland in 1959 – 1960. The surveyors were employed in the establishment of mapping and geodetic control. In this era surveyors used theodolites to observe horizontal and vertical angles and tellurometers to measure base line distances between survey stations. Laplace survey observations seen in Photo .1P was a series of precise observations carried out at geodetic survey stations to determine astronomic latitudes, longitudes and azimuths to achieve maximum precision in the survey network. Laplace observations were necessary in a geodetic network at every 6th survey station, however the National Mapping Council specified at this time the spacing would be ideally between 4-6 survey stations. The cairn shown in photo .4P was built by RASvy as a landmark over a trigonometric survey station. It was dismantled in 1960 to enable re-occupation and survey observations. It was not restored to the condition shown in the photo.This is a set of 10 photographs of surveyors and support staff in the field undertaking duties in the Northern Territory (NT) and Queensland (QLD) in 1959 – 1960. 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, colour, 1959. Tony Slattery occupying a Laplace survey station on a hill in the Mount Young area of the NT. .2) - Photo, colour, 1959. Surveyors’ camp in the Mount Young area of the NT, L to R: Spencer Snow and Tony Slattery. .3) - Photo, colour, 1959. Surveyors’ camp in the Peckman Hill area, near Katherine in the NT. .4) - Photo, colour, 1959. Cairn on Trig Hill, Borroloola, NT. Built by Spencer Snow, Tom Royle and Jack McCabe. .5) - Photo, colour, 1959. Survey party taking a break next to their Austin Champ vehicle, in transit between Katherine, NT and Wyndam WA. L to R: Tony Slattery, Dave Owens, John Van De Graff. .6) - Photo, colour, 1960. Surveyors’ camp between Mount Isa, QLD and Borroloola, NT. L to R: Pat Cox and John Van De Graff prepare their meal on an open fire. .7) - Photo, colour, 1960. Surveyor - Dennis Woods undertaking survey observations, using MRA1 tellurometer to measure base-line distances NW of Mount Isa, QLD. .8) - Photo, colour, 1960. Unidentified surveyors assessing recovery of their stalled Studebaker truck vehicle after attempting a water crossing in the NT. .9) - Photo, colour, 1960. Unidentified surveyor making batches of bread at a camp in the NT. Seen in the photo placing a lid with hot coals onto the camp oven. .10) - Photo, colour, 1960. Unidentified survey party occupying a survey station on a hill in the Mount near the Lawn Hill area, NW of Mount Isa, QLD. A MRA1 tellurometer to measure base-line distances appear on the right side of the photo. .9) - Photo, colour, 1960. Unidentified surveyors assessing recovery of their stalled Studebaker truck vehicle after attempting a water crossing in the NT. .10) - Photo, colour, 1960. Unidentified surveyor making batches of bread at a camp in the NT. Seen in the photo placing a lid with hot coals onto the camp oven. .1P to .10P annotated on back – personnel names, the year and the location. royal australian survey corps, rasvy, army survey regiment, asr, army svy regt, fortuna, surveying -
Bendigo Military Museum
Photograph - Royal Australian Survey Corps Surveyors in the Field – North Queensland and Torres Strait, 1961
... used theodolites to observe horizontal and vertical angles... used theodolites to observe horizontal and vertical angles ...This is a set of five photographs of surveyors and support staff in the field undertaking duties in North Queensland and Torres Strait in 1961. The surveyors were employed in the establishment of mapping and geodetic control. In this era surveyors used theodolites to observe horizontal and vertical angles and tellurometers to measure base line distances between survey stations. In photo .2P Joe Farrington is seen taking survey observations using a Tavistock V500 Series Tavistock theodolite at a survey station between the Edward River and Aurukun in the Cape York Peninsula. The Gulf of Carpentaria appears in the background. From 1957 helicopter transport of survey parties revolutionised transport in remote areas. The civilian helicopter was hired from TAA. This is a set of five photographs of surveyors and support staff in the field undertaking duties in North Queensland and Torres Strait in 1961. 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, colour, 1961. Andy Millar occupying a survey station on a hill in the Cape York Peninsula, QLD. .2) - Photo, colour, 1961. Joe Farrington taking observations with a V500 Series Tavistock geodetic theodolite at a survey station in the Cape York Peninsula, QLD. .3) - Photo, colour, 1961. Daryl Parker taking a break from survey observations on a hill located on Duaun Island QLD, in the Torres Strait, a few miles south of the PNG coastline. Hill height was 975 ft. .4) - Photo, colour, 1961. Three Torres Strait divers L to R: unidentified, Darku and Ray Mau Daryl standing behind a Tavistock geodetic theodolite on a hill located on Duaun Island QLD, in the Torres Strait, a few miles south of the PNG coastline. .5) - Photo, colour, 1961. Andy Millar holding meat from a small turtle on Duaun Island QLD, in the Torres Strait, a few miles south of the PNG coastline. An unidentified Duaun Island local appears in the background..1P to .5P annotated on back – personnel names, the year and the location. royal australian survey corps, rasvy, army survey regiment, asr, army svy regt, fortuna, surveying -
Bendigo Military Museum
Photograph - Royal Australian Survey Corps Surveyors in the Field – PNG, 1962
... horizontal and vertical angles and tellurometers to measure base line... horizontal and vertical angles and tellurometers to measure base line ...This is a set of four photographs of surveyors and support staff in the field undertaking duties in Dogera, Milne Bay Province and Kerema, Gulf Province of PNG in 1962. The surveyors were employed in the establishment of mapping and geodetic control. In this era surveyors used theodolites to observe horizontal and vertical angles and tellurometers to measure base line distances between survey stations. From 1957 helicopter transport of survey parties revolutionised transport in remote areas.This is a set of four photographs of surveyors and support staff in the field undertaking duties in PNG in 1962. 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, colour, 1962. Unloading survey operation stores from a Landing Ship Medium (LSM) at Dogera, Milne Bay Province, PNG. .2) & .3) - Photo, colour, 1962. Hired civilian helicopter Bell 47G-2 helicopters operating at at Dogera, Milne Bay Province, PNG. .4) - Photo, colour, 1962. Survey party at survey station located near Kerema, Gulf Province southern PNG. L to R: Dave Owens, Keith Broadbent, with local villagers in background..1P to .4P annotated on back – personnel names, the year and the location. royal australian survey corps, rasvy, army survey regiment, asr, army svy regt, fortuna, surveying -
Forests Commission Retired Personnel Association (FCRPA)
Basal Area Angle Gauge
Foresters usually measure the diameter of trees at Breast Height – traditionally 4 foot, 6 inches – now 1.3 m – which is termed Diameter Breast Height Over Bark (DBHOB). Basal Area is the cross section of the tree trunk at breast height, and the sum for the stand or group of trees is expressed square feet per acre (after 1973 it was expressed in square metres per hectare). Lots of skinny trees, or a few fat ones, can have the same Basal Area, but when combined with the number of stems, Basal Area is a good indicator of stand density. Two common methods are used to measure of Basal Area – fixed area plots and angle count sampling. 1. Fixed area plots require setting out a small area, commonly 50 m x 20 m, and measuring all the trees at breast height, and doing some quick sums. 2. Angle count sampling involves a simple sweep of the forest from a fixed sampling point using a relascope, dendrometer sight, angle gauge, or glass wedge prism. This wooden builders ruler has been shaped at one end to create a shallow angle (usually less than 3 degrees). Standing in one spot, a sweep is made with the wedge held to the eye, and trees are counted as either “in” or “out”. The number of trees is multiplied by conversion factor of the wedge (10 in this case) to estimate basal area. It’s very quick and effective.Basal Area Angle Gauge The two ends fold up and one end (on the right) has been reduced in width to create a shallow angle for the viewer Home made by cutting down a wooden builder's ruler Many forestry students made their own Basal Area Angle Gauges and its thought this may be oneforest measurement -
Bendigo Military Museum
Photograph - Royal Australian Survey Corps Surveyors in the Field – Project Cutlass, New Guinea, 1956 – 1957
... theodolites to observe horizontal and vertical angles and chains... theodolites to observe horizontal and vertical angles and chains ...This is a set of 23 photographs of surveyors and support staff in the field undertaking tasks in New Guinea 1956 – 1957. The surveyors were employed in the establishment of mapping and geodetic control for Project Cutlass, the “Ship-Shore” survey of the New Ireland province. In this survey operation surveyors used theodolites to observe horizontal and vertical angles and chains to measure base line distances between survey stations. Bob Skitch shown in photo .7P was in the 2nd year of his career in the Australian Army. He achieved the rank of Lieutenant-Colonel, and his last appointment was the CO of the Army Survey Regiment from 1976 to 1980.This is a set of 23 photographs of surveyors and support staff in the field undertaking duties during Project Cutlass located in New Ireland, New Guinea 1956 – 1957. 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, colour, 1956. Surveyors travelling main road from Kavieng to Namatanai, New Ireland. .2) - Photo, colour, 1956. Unidentified surveyors assessing recovery of their vehicle after bridge collapsed on west side of New Ireland. .3) - Photo, colour, 1956. Unidentified surveyors assessing recovery of their vehicle after bridge collapsed over flooded creek on west side of New Ireland. .4) - Photo, colour, 1956. Survey personnel L to R: Bev Uwins, John Lambie, Bob Thompson, New Ireland. .5) - Photo, colour, 1956. Survey base camp, New Ireland. .6) - Photo, black & white, 1956-1957. Geoff Helsham with possible human remains, New Ireland. .7) - Photo, black & white, 1956-1957. Bob Skitch undertaking survey observations using Wild T2 theodolite, New Ireland. .8) - Photo, black & white, 1956-1957. Chas Beach undertaking survey observations using Wild T2 theodolite, New Ireland. .9) & .10) - Photo, black & white, 1956-1957. Kev Parker (cook) New Ireland. .11) - Photo, colour, 1957. Brian Berkery taking a break, Top Manor Island, Lihir Island Group off New Ireland. Latitude -2° 46”, Longitude 152° 40”. .12) - Photo, colour, 1957. Survey base camp L to R: Chas Beach, Bev Uwins, Feni Islands, New Ireland. Latitude -4° 05”, Longitude 153° 45”. .13) - Photo, colour, 1957. A Hous Kiap. (Kiaps, known formally as district officers and patrol officers, were travelling representatives of the British and Australian governments), New Ireland. .14) & .15) - Photo, colour, 1957. L to R: Joe Farrington, Tom Royle Bob undertaking survey observations using theodolites from an improvised timber tower, New Ireland. .16) & .17) - Photo, colour, 1957. US Army ship FS216 used for ship-to-shore triangulation docked at Rabaul, New Britain. .18) - Photo, colour, 1957. US Army ship FS216 used for ship-to-shore triangulation docked at Kavieng, New Ireland. Sight target on top of mast. .19) - Photo, colour, 1957. Survey personnel onboard US Army ship FS392, L to R: Peter Frodsham, Bob Thompson, Doc Reid, John Underwood, remainder unidentified, New Ireland. .20) - Photo, colour, 1957. Survey base line party heading ashore, New Ireland. .21) - Photo, colour, 1957. Survey personnel rowing US Army assault boat L to R: Kev Parker, Chas Beach, folded up survey beacons overhanging stern, New Ireland. .22) - Photo, colour, 1957. Les Bailey onboard US Army ship departing Rabaul, New Britain for Brisbane. .23) - Photo, colour, 1957. Ron Newman onboard US Army ship departing Rabaul, New Britain for Brisbane. Active volcano in background..1P to .23P annotated on back – ‘Operation Cutlass’, personnel names, the year and the location. royal australian survey corps, rasvy, army survey regiment, fortuna, a, army svy regt, asr, surveying -
Flagstaff Hill Maritime Museum and Village
Instrument - Telescope, Early 18th Century
This Dollond Day or Nigh telescope was designed to be used in any light conditions, as its name implies. Telescopes are optical instruments designed to make objects appear to be larger or closer. The discovery of the first telescope in 1608 can be attributed to Hans Lippershey of the Netherlands when he discovers that holding two lenses up some distance apart bring objects closer. He applies for a patent on his invention and this becomes the first documented creation of a telescope. Then in 1668, Newton produces the first successful reflecting telescope using a two-inch diameter concave spherical mirror. This opened the door to magnifying objects millions of times far beyond what could ever be obtained with a lens. It wasn’t until 1729 that Chester Moor Hall develops an achromatic lens (two pieces of glass with different indices of light refraction combined produce a lens that can focus colours to almost an exact point resulting in much sharper images but still with some distortion around the edges of the image. Then in 1729 Scottish instrument maker James Short invents the first parabolic and elliptic, distortion-less mirror ideal for reflecting telescopes. We now come to John Dollond who improves upon the achromatic objective lens by placing a concave flint glass lens between two convex crown glass lenses. This had the effect of improving the image considerably. Makers Information: John Dollond (1707-1761) London England he was a maker of optical and astronomical instruments who developed an achromatic (non-colour distorting) refracting telescope and practical heliometer. A telescope that used a divided lens to measure the Sun’s diameter and the angles between celestial bodies. The son of a Huguenot refugees Dollond learned the family trade of silk weaving. He became proficient in optics and astronomy and in 1752 his eldest son, Peter joined his father in an optical business, in 1753 he introduced the heliometer. In the same year, he also took out a patent on his new lenses. He was elected a fellow of the Royal Society in May 1761 but died suddenly in November and his share in the patent passed to his son Peter. In subsequent squabbles between Peter and the many London opticians who challenged his patent, Peter’s consistent position was that, whatever precedents there may have been to his achromatic lenses, his father had independently reached his practical technique on the basis of his theoretical command of Newtonian optics. As a result of maintaining his fathers patent, Dollond s became the leading manufacturer of optical instruments. For a time in the eighteenth and nineteenth century the word 'Dollond' was almost a generic term for telescope rather like 'Hoover; is to vacuum cleaner. Genuine Dollond telescopes were considered to be amongst the best. Peter Dollond (1731-1820) was the business brain behind the company which he founded in Vine Street, Spitalfields in 1750 and in 1752 moved the business to the Strand London. The Dollonds seem to have made both types of telescopes (reflecting and refracting), possessing the technology to produce significant numbers of lenses free of chromatic aberration for refracting telescopes. A Dollond telescope sailed with Captain Cook in 1769 on his voyage to observe the Transit of Venus. Thomas Jefferson and Admiral Lord Nelson were also customers of the Dollonds. Dollond & Co merged with Aitchison & Co in 1927 to form Dollond & Aitchison, the well-known high street chain of opticians, now fully part of Boots Opticians. They no longer manufacture but are exclusively a retail operation. John Dollond's experiments in optics and how different combinations of lenses refract light and colour gave a better understanding of the divergent properties of lenses. That went on to inform and pave the way for the improvement of our understanding of optics that is represented today. Dollond was referred to in his time as the "Father of practical optics" as a leader in his field he received many prestigious awards. The telescope in the collection is a good example of one of Dollond's early library telescopes. Its connection with one of England's 18th century pioneers in optical development makes it a significant and an important item to have within the collection.Telescope: Dollond's Telescope, Day or Night model navigational instrument. Telescope is mounted on wooden tripod stand that has folding legs. Brass telescope with leather sheath over barrel, adjustable angle fitting with brass wing nuts that join the legs to the top frame, which is then joined to the telescope pole by an adjustable screw fitting. Manufactured by Dollond, London. Inscription reads "Dollond London, Day or Night" and "DOLLOND LONDON"flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, telescope, dollond, dollond london, day & night telescope, floor-standing telescope, optical instrument, john dollond, peter dollond, achromatic telescope, heliometer, light refraction, instrument maker, lens, transit of venus, astronomical telescope, concave lens, library telescope, dollond telescope, day or night, day or night telexcope, scientific instrument, navigation, navigational instrument, astronomy