Showing 484 items
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Eltham District Historical Society Inc
Photograph, Main Street, Greensborough, c.1910, 1910c
Early view of Main Street Greensborough showing the mainly residential nature of the buildings. Photographs from the collection of Peter Blackbourn, a descendant of the Chapman Stock family.Photograph copy originally located in a magnetic style album titled 'Greensborough Bypass 1990s 5' suffering significant degradation. No information contained in album or on reverse of photos except where noted. Relocated to archival photosafe storage.greensborough, main street -
Eltham District Historical Society Inc
Photograph, Steam engine being hauled by bullock team, possibly over the Plenty River Bridge, Main Street, Greensborough, c.1870, 1870c
Photograph copy originally located in a magnetic style album titled 'Greensborough Bypass 1990s 5' suffering significant degradation. No information contained in album or on reverse of photos except where noted. Relocated to archival photosafe storage.greensborough, main street, plenty river bridge, steam engine, bullock team -
Eltham District Historical Society Inc
Photograph, Butchering a pig, possibly Greensborough, c.1870, 1870c
Photograph copy originally located in a magnetic style album titled 'Greensborough Bypass 1990s 5' suffering significant degradation. No information contained in album or on reverse of photos except where noted. Relocated to archival photosafe storage.greensborough -
Eltham District Historical Society Inc
Photograph, Main Street, Greensborough, 1920s, 1920s
Looking towards the Plenty River from outside the current premises of the State Savings Bank. In the foreground is one of the old carbide street lamps. Behind the lamp is the drinking fountain erected as a memorial to Greensborough's Great War (First World War) Diggers. This memorial is now in the park in Henry Street, (Photo: Nillumbik Historical Society)Colour photograph copy originally located in a magnetic style album titled 'Greensborough Bypass 1990s 5' suffering significant degradation. No information contained in album or on reverse of photos except where noted. Relocated to archival photosafe storage.greensborough, main street -
Tatura Irrigation & Wartime Camps Museum
Surveyors Compass, Brush and Drummond Melbourne, 1920s
Owned by donor's father and used surveying for irrigation purposes.Round metal case containing magnetic compass needle, eyepiece and sighting hair. The sighting wire frame secures the neelde in a fixed position when depressed, complete with metal close fit lid and leather carrying pouch and strap.irrigation, surveying -
Federation University Historical Collection
Equipment - Galvonometer, 1930 (estimated)
Galvanometers are an instrument used for detecting and measuring electric current. They had a magnetic needle moved by the magnetic field produced by coils carrying the current to be measured, and the earth's field had to be taken into consideration. They were used to detect current in either direction in telegraphy systems, and to test equipment.Post Office Galvonometer. A hinged polished timber case with three brass terminals at the top, and ring (handle) and a dial (0 to 70) with an indictor needle. The opened box reveals wires leading to the terminals with two compartments covered in blue woven material (possibly silk).telegraph works, galvonometer, scientific instruments -
Eltham District Historical Society Inc
Photograph, View of 'Willis Vale', Greensborough, 1906, 1906c
'Willis Vale' home of the Partington family is shown in this photograph as well as the area now known as Partington's Flat. The area was owned and farmed by the Partington family from the 1870s. Willis Vale was destroyed by fire in the 1960sBlack and white photograph copy originally located in a magnetic style album titled 'Greensborough Bypass 1990s 5' suffering significant degradation. No information contained in album or on reverse of photos except where noted. Relocated to archival photosafe storage.greensborough, partingtons flat, partington family, willis vale -
Eltham District Historical Society Inc
Photograph, Painting, Greensborough, Arthur Elliott (1889), 1906c
Shows Main Street Greensborough with the Methodist Church in upper right corner, Lower Park and bluestone bridge in foreground.Black and white photograph copy originally located in a magnetic style album titled 'Greensborough Bypass 1990s 5' suffering significant degradation. No information contained in album or on reverse of photos except where noted. Relocated to archival photosafe storage.greensborough, main street, arthur elliott -
Queenscliffe Maritime Museum
Binnacle from Victoria Tower, see description
In memory of the owner's husband Chief Petty Officer(GNR) Frank Hillier RANHousing for a ship's compass with a window at the back to light the face of the compass during daylight and a small compartment on the right hand side with a hinged door for inserting a candle for night viewing (mounted on a wooden base)Model p 6: Magnetic Liquid Compass No 2767: Date 12-1956 WT 5 kgs: Manu. by C8879 T2757: Nunotani Keiki Seisakusho Ltd: Amagasaki: Japan -
Flagstaff Hill Maritime Museum and Village
Instrument - Fob Watch, 1940-60s
Fob (or pocket) watches were developed in Europe in the 16th century and gained wide usage during the mid 18th century until World War 1 when the wristwatch was invented. These watches were designed to be carried in a small pocket and attached through the means of a 'fob' which could be a chain or made from a variety of materials such as leather. Their popularity peaked in the nineteenth century where they were an important part of middle and lower class society as well.This item is of social significance as fob / pocket watches were valued as an essential object in all levels of society. For some occupations, such as the railroads, it was a necessary tool of the job. Steel York Lever open face pocket / fob watch dated between 1940-1960. The dial has an inner pewter circle, outer minute divisions and a circular insert and hand to show the seconds. The numbers are finely edged with a black line and the hands are two coloured. The back of the watch is patterned with fine lines and three rectangle shapes. The words 'ANTIMAGNETIC' are on the front of the watch. Anti-magnetic watches began to be made at the beginning of the 20th century as mechanical watches were affected by magnetic fields. The 'lever' set on watches was a requirement for railroad watches. It required a two step process for the hands to be adjusted. The front dial of the watch has the words 'YORK LEVER', 'ANTIMAGNETIC' and 'MADE IN GERMANY'. flagstaff hill maritime museum and village, warrnambool, great ocean road, shipwreck coast, fob watch, pocket watch, watch, horology, time keeper, york lever, anti-magnetic, made in germany -
Melbourne Tram Museum
Decorative object - PTC Magnet, Public Transport Corporation (PTC), c.1990s
Used for decorative purposes on magnetic surfaces, such as on a fridge door. Likely an advertisement for the Public Transport Corporation.A marketing material associated with a now-superceded transit agency (since the 1990s).White rectangular sheet magnet with the text "Public Transport Corporation" printed in teal serif font between 4 black lines.public transport, public transport corporation, ptc -
Forests Commission Retired Personnel Association (FCRPA)
Prismatic Compass with leather case and strap, Ex Army 1940s
A prismatic compass is a common navigation and surveying instrument which was used extensively by the Forests Commission The compass most commonly used to run a traverse line. The compass calculates bearings of lines with respect to magnetic needle. A magnetic deviation correction was needed to convert the reading to a true bearing The compass could also determine angles between the traverse and waypoints (such as hilltop features). Commonly used for navigation. Largely replaced by modern GPS technology.Ex Army WW2 prismatic compass with leather case and strap. Rugged design and made of metal the internal compass plate floats on oil to help it stabilise The user lines up the direction of travel with the hair sightline in the fliptop cover and readings are taken through the viewfinder prism (hence the name).forest measurement, surveying, forests commission victoria (fcv) -
Federation University Historical Collection
Instrument - Surveyor's Instrument, Boxed Theodolite, c late 1880s
According to Max Clarke this item was used by the surveying classes at the Ballarat School of MinesA boxed (timber) theodolite with crossbars and full-length stadia wires. The theodolite can be mounted on a metal straightedge base. The box also contains a magnetic compass with two bubble levels, a plumbing folk, and 4 brass paper clips designed to suit a plan table. On box in black paint "A 1". Inside box lid is manufacturer's label and Stadia measurement zero reference calibration.ballarat school of mines, surveying equipment, gurley, max clarke, theodolite, stadia measurement, calibration, scientific instrument -
Federation University Historical Collection
Instrument - Scientific Instrument, Miner's Dial, mid 1800s
A quadrant mounted telescope with crosshairs and external focussing, with longitudinal bubble level. Mountable on a magnetic compass plate with two bubble levels. Complete with dapered-spigot base plate and slot view attachments, Housed in a polished timber box. Inside the box are two labels -A label on the inside of the box " to the School of Mines and Industries, Ballarat" To (...) Hoadley, Esq, Principal, Footscray Technical school, Footscray WII" "Sluggish Needle, 9/4/3..." "still sluggisg 1966"mining, ballarat school of mines, surveying, archibald hoadley, scientific equipment, circumferential, scientific instruments -
Federation University Historical Collection
Book - Exercise Book, Exercise Book of P.J. McCarthy, 1946
Ballarat School of MinesBlack hard covered exercise book, contains index in front of book, written by P.J. McCarthy, covering experiments such as: the absolute density of water, focal length of concave mirror, law of repulsion between magnetic poles, fortin barmometer, Verniers, vaporization of steam, etc;density of water, focal length of concave mirror, law of repulsion, fortin barometer, verniers, ballarat school of mines, p.j. mccarthy -
The Ed Muirhead Physics Museum
Statitron Analysing Magnet
The Statitron beam was analysed by a ninety degree annular magnetic spectrograph.The magnet had a radius of curvature of 30cm. The winding consisted of 30 layers of 15 B&S enamelled copper wire, about 4000 turns in all and could carry a current of 5 amperes. -
Federation University Historical Collection
Instrument - Scientific Instrument, Pajari Instruments, Boxed Tropari
This item was most probably used at the Ballarat School of Mines. Pajari Instruments Ltd. grew from a partnership established in 1945 when the first EX-AX surveying instrument that provided accurate azimuth and inclination was made available to the diamond drilling industry. The partnership between Charles Trotter and George Pajari Sr. was known as Trotter-Pajari Instruments and the EX-AX Instrument was dubbed the "TROPARI" by the diamond drilling industry. Charles Trotter, a mechanical engineer, was also a marketing genius who developed substantial demand in Australia, Africa and South America in the 1940's and early 1950's. In fact the sales to each of these continents exceeded those to North America during those early years. Pajari is located in Orillia, Ontario, Canada and offer services and products that assist customers with their individual requirements. After the death of Charles Trotter in 1956, George Pajari Sr. with the assistance of his wife Hilda continued the business under the title of Pajari Instruments. George Sr. set most of the tenets that comprise our present Mission Statement. If it wasn't user friendly or if it had to have experts to operate it, that instrument design was doomed. If the customer wasn't getting good value in his opinion, manufacturing and repair procedures were examined to see where efficiency could be improved to cut costs without sacrificing Quality. George Pajari Jr and his wife Darlene assumed the reins of Pajari Instruments Ltd. in 1981 when George Sr. decided on semi-retirement. George Jr. brought the "client geologist's" perspective to the company. The company moved from Toronto to a 30 hectare (80 acre) site near Orillia shortly afterward. This site provided the high magnetic latitude earth field environment without magnetic pollution that is necessary for accurate compass setting. The park like setting of this location is a positive psychological benefit for our staff. George Sr. passed away in 2002 being preceded by Hilda only by 3 months, George Jr. continues at the helm of the company. With dedication from long term employees/contractors and third generation family members, Pajari Instruments Ltd. continues operations/new product development in Orillia. (http://www.pajari.com/about.html) Brass levelling compass in green velvet lined hinged timber box. Known as a Tropari - a single-shot, micro-mechanical borehole surveying instrument operated by a timing device. Borehole direction is measured from the earth's magnetic field. The Tropari provides both direction and inclination which can be used to define the attitude of the borehole at the survey depth. Regular surveys at intervals as the borehole progresses will allow a plot of the borehole to be drawn from the data. The Tropari is easy to use and maximizes profits by minimizing capital and operational costs. The Basic Survey Train Consists of: PDSI / Tropari Container, 6m (20 ft) Nonmagnetic Rods, Impact Foot, and Connector at Top. (http://www.pajari.com/tropari.html) A sticker on the lid of the hinged box states: "A.E. Parsons 107 Leicester St., Carlton 3053 Telephone 347 5844"scientific instrument, compass -
Moorabbin Air Museum
Document (Item) - Mirage - Special Technical Instructions
Description: Publisher: Sperry Pages: 20 Keywords: Mirage Overhaul Instructions Magnetic Azimuth Detector Level of Importance: National. -
Melbourne Tram Museum
Decorative object - PTC & V/Line Magnet, Public Transport Corporation (PTC), c.1990s
Used for decorative purposes on magnetic surfaces, such as on a fridge door, while also an advertisement for the Public Transport Corporation and V/Line.A marketing material associated with a now-superceded transit agency (since the 1990s). The V/Line logo shown was distinct in the 1990s, which has since changed as well.Rectangular sheet magnet with the logos of the PTC and V/Line on the top. In the centre reads, "City or Country/the best way to travel/is with The Met/and V/Line." At the bottom phone numbers for both groups are advertised, above the text "Public Transport Corporation."public transport, public transport corporation, ptc, v-line -
University of Melbourne, Burnley Campus Archives
Album - Black and white photographs, certificate and reports, Justine Curry (Mitchelson) Album Burnley Horticultural CollegeVic. 1953-1954, 1953-1954
Donated by Justine Curry (nee Mitchelson) (1954) for the 1991 Centenary. Also includes photocopy of her Certificate of Competency and her Reports for 1953 and 1954. Note (5) Frame for School Bell which used to be on top of the Pavilion is on the ground outside the Administration Building, later installed above the door.Photograph album collection of 61 b/w photographs of different sizes dated 1953-1954, some labelled. Were attached to magnetic pages but have come loose and have been transferred to plastic pockets. Also photocopy of work experience. A newspaper cutting. certificate of Competency. Reports.Labelled, "Justine Curry 4/11A Margate Pd., Margate, Qld 4020." justine curry (nee mitchelson), administration building, luffmann ponds, yarra river, helen eastman, orchard, wilson's promontory, lloyd davies, mr kneen, students, e. b. littlejohn, jennifer edwards, botanic gardens melbourne, cricket, student groups, certificate of competency, school report, justine curry, justine mitchelson, t h kneen, luffman ponds, lily ponds, royal botanic gardens, ann spruzen, teena, garden views, school bell, orchard gates, orchard border, wilson's promontory camp, mervyn, boys changing room, john rittinger, barb mckay, carmel devaney, marie-louise leng, john sutherland -
Flagstaff Hill Maritime Museum and Village
Instrument - Compass, c. 1839
This magnetic compass is a good size to fit easily into a person's pocket or personal luggage and is protected from knocks by its wooden case. It could have been used for reference when travelling on land or sea. There is no visible manufacturer's mark, which may mean that it was not of high monetary value. Leith is a district of Edinburgh in the country of Scotland, the U.K. It was once the Port of Edinburgh and many migrant ships departed from here bound for the Australian colony. It had a busy shipbuilding industry, with wet and dry docks. It appears from the inscription on the case "Chas Gray, LEITH, 1839" that this pocket compass once belonged to Charles M. Gray (Chas is a common abbreviation for the name Charles). The inscription coincides with the name, place and date that the Western Victorian pioneer Charles M. Gray left Scotland and arrived in Australia. Charles Gray was born in Anstruther, Scotland, in 1818. His family was connected with the Royal Marines, which may have created his nautical instruments such as this pocket compass. Charles Gray arrived in Hobson's Bay on 15 June 1839 on the ship “Midlothian”. That same ship had departed from Leith, Scotland on February 15th 1839. Did Charles Gray acquire the pocket compass in Leith, perhaps as a gift or a souvenir of his motherland? Charles Gray was an early squatter and went on to become a very successful settler as a sheep pastoralist in the Western District of what is now Victoria (originally the colony of New South Wales). He and his wife had a large property called “Nareeb Nareeb”, Green Hill Creek District (now Glenthompson), Victoria, from 1840-1886. He was also a local Councillor and Justice of the Peace, and had an interest in the local indigenous people; he named his property after their tribe. Charles returned to England in 1890 and died there in 1905. Charles Gray had written an account in 1890 of his life at Nareeb Nareeb, called Western Victoria in the Forties: "REMINISCENCES OF A PIONEER The Western District in the 1840's By Charles Gray" , a valuable historical reference to colonial Victoria. His book was published by the Hamilton Spectator in 1932. Charles Gray's photograph is one of 713 historical photographs of early Victorian settlers, created as a montage by Thomas Foster Chuck in 1872. The State Library of Victoria holds the framed montage titled “The Explorers and Early Colonists of Victoria”. To qualify for inclusion on this montage the Settlers must have arrived in Victoria before 1843. Charles Gray's photograph is number 349! The pocket compass is associated with Charles Gray, one of the early squatters and settlers in Western Victoria, possibly given to him as a parting gift on his emigration to Van Diemans land in 1839. The item is very significant as it's connection with one of Victoria's early pioneers is well provenanced by the inscriptions on the wooden case. Pocket compass, brass, set into a square wooden case with hinged lid and small hook catch. Compass is marked with 360 degrees and compass points and has two pointers; one to show magnetic north and one to set the direction of travel. Hinges are triangular and inset into the wood. The lid has an attached brass plaque with the inscription "Chas Gray, Leith, 1839" (It likely belonged to Charles Gray, Leith, UK, who migrated to Port Philip Australia in 1839 and became a successful pastoralist.) “Chas Gray / LEITH / 1839” engraved on brass plaque on lid.flagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, magnetic compass, pocket compass, charles m. gray, chas gray, migrrant from leith 1839, charles gray anstruther, scottland, ship midlothian 1839, squatter western victoria, settler western victoria, hobson's bay port phillip australia, charles gray nareeb nareeb - green hill creek district, western victoria in the forties: reminiscences of a pioneer by charles m. gray 1890, leith edinburgh u.k., western victoria in the forties: reminiscences of a pioneer - montage by thomas foster chuck 1872, charles gray, reminiscences of a pioneer, the western district in the 1840's, compass, scientific instrument, nautical instrument, direction, directional compass, navigation -
Flagstaff Hill Maritime Museum and Village
Document - Navigation Chart, Admiralty Office, Lady Bay and Warrnambool Harbour, 1893
This navigation cart of Lady Bay and Warrnambool Harbour was originally surveyed in 1870 but this version includes the update for magnetic variation in 1893. Since the printing of the chart several annotations have been added. These include an additional stamp dated 15-8-1910, a handwritten comment across the top of the page dated August 1910, and another handwritten comment regarding the ‘Proposed Extension of Dock’ dated 19-2-1925, plus connected drawings, notes and figures. The 1925 proposal on this chart may have been a reaction to the Royal Commission of 1923, when the damaged stonework on the seaward side of the Warrnambool Breakwater, caused by the action of the sea, was the subject of enquiry. A conference between the Public Works, Water Commission and the Harbour Trust concluded that it would less costly to make repairs to prevent further damage rather than replaced the damage portion of the wall. A contract was raised in late 1924 to deposit rubble on the damaged side of the breakwater to minimise the Southern Ocean’s destructive action and work had started by August 1925. The Breakwater construction had begun in 1874 and was completed in 1890. The Victorian Government had commissioned Sir John Coode, a British harbour engineer, to present a plan to complete the Warrnambool Breakwater but his original plan was too expensive. He prepared a revised plan for a shorter structure. The construction proved to be too short to protect adequately from the weather and didn't allow enough depth for larger vessels to come into port. The decreasing trade was further affected by siltation in the bay due to the breakwater, and the completion of the railway line. The situation of the harbour became a real problem by 1910 and required continuous dredging. In 1914 the Breakwater was extended but proved to be a failure because the work began to subside and by 1920 about two thirds of the harbour was silted up. Alterations made in the 1920's increased the silting problem and by the 1940's the harbour was no longer used. More alterations were made in the 1950's and 1960's. This chart is significant for its strong connection to the maritime history of Warrnambool Harbour and Lady Bay and the Warrnambool Breakwater. The Warrnambool Breakwater is registered as a place of significance on the Victorian Heritage Database (VHR H2024). The Warrnambool Breakwater is one of the most important late 19th century maritime engineering projects in Victoria and significant in the development of Victorian coastal shipping. It is also significant for its connection with British harbour engineer, Sir John Coode. The chart is a historical record of structures existing in 1893; the Warrnambool Jetties, Warrnambool Breakwater in Lady Bay, the leading lights (lighthouses), streets, roads, bridges and many buildings. It also shows the lay of the land and seabed. Navigation Chart: Lady Bay and Warrnambool Harbour, Australia - South Coast - Victoria. Surveyed by Nav. Lieut. H.J. Stanley, R.N., 1870. Updated for Magnetic Variation, 1893. The rectangular chart is printed on heavy cream paper. Stamps are shaped rectangular, oval and round. Around the Breakwater and Jetty area are handwritten notes, dotted and joined lines, numbers and signatures, and shading of red and green. The chart shows the surrounds of Warrnambool Harbour, Lady Bay, the Breakwater and Jetty, roads, bridges and the streets in Warrnambool. It has sounding details, and angles of line from the leading lights.Stamp, rectangular, including "AUG 1910" Stamp, double oval " - - - -CHART" Stamp, hand drawn, red circle, with "B" inside Hand written note "22-8-1910 - - - - - of surveying C. Ca - - - request of 15-8-10 [initials] " Notes and lines in red pen, including a grid of sounding numbers: "1300" "1050" "1200" "Possible Extension of Dock" "19-2-25" "Dock Dredged to 20 Ft" Notes and lines in blue pen "Extension of Dock to accommodate vessels drawing 20 Feet" and "Light not visible south of this line" Red dots (4) with yellow highlight at both leading lights, breakwater and jettyflagstaff hill, warrnambool, flagstaff hill maritime museum & village, maritime museum, maritime village, shipwreck coast, map, chart, navigation chart, plan, lady bay, warrnambool harbour, port of warrnambool, breakwater, jetty, pier, dock extension, proposed extension, vhr h2024, 1870, 1893, 1910, 1925, warrnambool town late 1800s, warrnambool streets late 1800s royal commission, 1923, public works, water commission, harbour trust, victorian harbours, sir jon coode -
Frankston RSL Sub Branch
Compass, Plane Table, J. W. Handley, 1943
A plane table compass, sometimes referred to as a trough compass, used by surveyors and artillery crew to accurately establish magnetic north. The compass is precision machined of brass material with a long needle to ensure accuracy. The compass scale is marked with a centre zero (for magnetic north) and graduations indicating plus and minus five degrees. The compass is housed in a protective wooden case with a sliding lid. The lid has a brass slide which locks the compass needle during periods when the compass is not in use. This compass is the type used by an artillery unit of the Australian Military Forces during World War 2. This compass was manufactured by J. W. Handley P/L of Melbourne in 1943. Refer 00330 and 00330.2The side of the compass body is stamped: "J.W.H." with the letter "V" under a line, "SERIAL No 1082", MARK.II-D^D-1943". The case is stamped with the serial number "1082".artillery, trough compass, plane table compass, compass, world war 2, ww2 -
Eltham District Historical Society Inc
Photograph, View looking southwest from near Manatunga Circuit across the Diamond Valley United Soccer Club field, Greensborough, c.1986, 1986c
Greensborough Plaza at far left. Railway line running horizontally across centre of picture. Three colour photographs and one digital panorama created from two of the three images. Colour photographs originally located in a magnetic style album titled 'Greensborough Bypass 1990s 5' suffering significant degradation. No information contained in album or on reverse of photos except where noted. Relocated to archival photosafe storage.manatunga circuit, greensborough plaza, diamond valley united soccer club, greensborough -
Anglesea and District Historical Society
Radio, Breville Sydney, Breville Gem, 1950
Model 903 - Broadcast Receiver - past WW2 Tuner. Valves and tubes - GAN7, EBF35, GM5, 6x4 Principle: Super-Heterodyne ZF/IF 452KHz Wave Bands: Broadcast only (MW) Power: AC 220/240 Volt Loudspeakers: Permanent Magnetic Dynamic (PDyn) Loudspeaker (moving coil) Colour: RedBack: Internal Aerial Socket Model 903 Front: Left Dial - OFF VOLUME. Front: Right Dial - AK, MAAW, C SDB, LO, CO, G1, AR UZ, KZSR, XY BN CV; BATR HA UL WV -
Federation University Historical Collection
Scientific Instrument, Induction Coil
An induction coil consists of two coils of insulated copper wire wound around a common iron core. One coil, called the primary winding, is made from relatively few (tens or hundreds) turns of coarse wire. The other coil, the secondary winding, typically consists of many (thousands) turns of fine wire. An electric current is passed through the primary, creating a magnetic field. Because of the common core, most of the primary's magnetic field couples with the secondary winding. The primary behaves as an inductor, storing energy in the associated magnetic field. When the primary current is suddenly interrupted, the magnetic field rapidly collapses. This causes a high voltage pulse to be developed across the secondary terminals through electromagnetic induction. Because of the large number of turns in the secondary coil, the secondary voltage pulse is typically many thousands of volts. This voltage is often sufficient to cause an electric spark, to jump across an air gap separating the secondary's output terminals. For this reason, induction coils were called spark coils. The size of induction coils was usually specified by the length of spark it could produce; an '8 inch' (20 cm) induction coil was one that could produce an 8 inch arc. (http://en.wikipedia.org/wiki/Induction_coil)A metal and plastic object on a timber stand. In an induction coil the distance between the plates is often used to measure the voltage of the spark since the air breaks down at 30 000 volts per centimetreballarat college of advanced education, scientific instrument, induction coil, scientific instruments, electricity -
Eltham District Historical Society Inc
Photograph, Bruno, the man in charge of the road construction, Ryans Road, Eltham North, 1983, 1983
Originally contained in a 'magnetic' photo album believed to have been donated by Mr Eric Stephenson, Jingalong, 110 Ryans Road, Eltham, Vic. 3095; relocated to archival safe storage.Colour photographeltham north, road construction, ryans road -
Eltham District Historical Society Inc
Photograph, Road construction, Ryans Road, Eltham North, 1983, 1983
Originally contained in a 'magnetic' photo album believed to have been donated by Mr Eric Stephenson, Jingalong, 110 Ryans Road, Eltham, Vic. 3095; relocated to archival safe storage.Twelve colour photographseltham north, road construction, ryans road -
Eltham District Historical Society Inc
Photograph, Road construction near Progress Road, Ryans Road, Eltham North, 1983, 1983
Originally contained in a 'magnetic' photo album believed to have been donated by Mr Eric Stephenson, Jingalong, 110 Ryans Road, Eltham, Vic. 3095; relocated to archival safe storage.Four colour photographseltham north, road construction, ryans road, progress road -
Eltham District Historical Society Inc
Photograph, Road construction near 'Jingalong', Ryans Road, Eltham North, 1983, 1983
Originally contained in a 'magnetic' photo album believed to have been donated by Mr Eric Stephenson, Jingalong, 110 Ryans Road, Eltham, Vic. 3095; relocated to archival safe storage.Four colour photographseltham north, road construction, ryans road, jingalong