The Optacon OPtical-to-TActile-CONverter is a compact, portable reading aid for the blind. It is about the size of a textbook, and weighs less than 2kg. It works by converting a printed image into a tactile image that a blind person can feel with one finger. After a period of training and practice, a blind person can use the Optacon to read ordinary books, magazines, newspapers, and other printed materials. The Optacon was developed after intensive research at Standford University, California, USA and was trialed by clients of the Royal Victorian Institute for the Blind (now part of Vision Australia) in 1973. It has three main sections: 1 a miniature camera, 2 an electronics section, and 3 a tactile stimulator array. The miniature camera, about the size of a pocket knife, is mounted in a housing that has rollers for easy movement along a line of print. The camera is connected to the electronics section by a lightweight cable. The electronics section and the tactile stimulator array are in the main chassis. The array consists of 144 tiny metal rods arranged in six vertical columns and 24 horizontal rows. Each of the rods can vibrate independently. The tips of these rods protrude through holes in a concave finger plate where the index finger is placed flat in order to read. These three components act together to convert the image of a printed letter or other shape into a pattern of vibrating rods, a tactile image of the letter or shape. The letter shape is tactually perceived as an image that moves from right to left on the finger, showing the left or leading edge of the letter first. Letters are felt sequentially rather than all at once, and the image should be kept moving. The Optacon converts a printed O into a tactile form that resembles a crater with a vibrating rim -- a completed circle. C would have a gap or opening on the right side of the curve. The letter F would be felt, sequentially, as a vertical line with two trailing horizontal lines. Because it can convert any ordinary printed image into a corresponding tactile image, the Optacon is not restricted to any special typestyle or language. The camera has a zoom lens that compensates for differences in the size of type. The standard Optacon lens can accommodate type sizes from 6 point to 20 point. With the optional F4A magnifier lens, type sizes as small as 4 point can be read. Powered by a rechargeable battery, and comes with its own battery charger. The battery is contained within the main chassis, and is not removable by the user. There are four basic controls on the Optacon: the Magnification Adjustment zoom button located on the camera section on the side opposite the rollers; and the On-Off switch, the Stimulator Intensity Adjustment knob, and the Threshold Adjustment knob located on the right side of the front panel. The Circuit Breaker protrudes from the right-hand wall inside the chassis compartment. From left to right when the back panel is facing you, are located: the jack for connecting the battery charger; the Battery Check button; the Normal-Invert switch; and the Input/Output I/O connector for use with the Visual Display, when using the Repeater Cable to connect two Optacons to one another or with other accessories. Designed not be removed from the leather case during normal operation, the On-Off switch is a slide switch located on the right side of the front panel. It slides up and snaps into place in the on position. 1 black with orange front, rectangular device in leather case assistive devices, audio equipment

The battery powered set, which dates from the second half of the twentieth century, comprises two main components, the electronic keyer with a single lever for tapping, and a transmitter (?), both connected by a keying cable. Morse code was invented in the 1830s by American, Samuel Finely Breese by using electrical signals to quickly transmit information over a long range. In the early 1890s Italian inventor, Guglielmo Marconi improved the technology to the point where it became an essential device used for commercial and government purposes. The first practical applications were demonstrated with maritime messaging, where this simple mode of communication was seen as a timely replacement for the historic practice of signaling by flags, lights and foghorns. Cape Schanck has an earlier Morse code key, which is original to the lightstation (CSLS 0035), and Cape Otway has another early example although its provenance to the lightstation has not been formally verified (COLS 0074). The Morse code set has first level contributory significance for its historical value as an earlier communications device that has since been made redundant by more sophisticated technologies.Morse code key set. Comprised of the tapping component and a metal box part with a white electrical cord.Yes

This portable, hand held visual signalling lamp was used for optical communication via Morse code. It comprises the metal encased Aldis lamp with electrical cord and its associated green-painted, hinged wooden carrying case, which has a metal clasp and leather hand grip. Larger versions of these lamps are fixed on ships or pedestals and have shutters on the front that are opened and closed to transmit signals. Smaller hand held versions like the Point Hicks example have a concave mirror that is tilted to focus the light into pulse signals via a trigger. The lamps were pioneered by the British navy in the late nineteenth century and continue to be used to the present day.317 Details on the Point Hicks lamp include a serial number and other information. Another Aldis lamp and case remaining at Cape Nelson Lightstation dates to 1960 and has the initials of the Department of Transport, which at that time incorporated the Commonwealth Lighthouse Service. Wilsons Promontory also has an Aldis lamp and case that dates from around the same year. A lamp formerly at Cape Schanck has disappeared. The Aldis lamp and associated case at Point Hicks has first level contributory significance for its historic values and provenance to the lightstation. PHLS0007.1 Hand held signal light. Painted metal trigger with attached black electrical leads with battery terminals at end. Inscriptions on metal of lantern. PHLS0007.2 Hinged lid, wooden box painted army green to house signal light. Metal plate with inscription on front of box.PHLS0007.1 "D^D / LANTERN PORTABLE SIGNALLING / ADMIRALITY No 5110D / SERIAL No 5482 YEAR 943 / AMALGAMATED WIRELESS / A ASA LTD / 9792-100" •PHLS0007.2 "20 K4 transporting lantern / admirality pattern no 91108"

A Berdan pan was a grinding pan. The circular pan was set at an angle, and as the pan revolved, a heavy iron ball rotated in the lowest point, grinding sand or mineral to a fine powder. It was frequently used to grind impurities out of amalgam (gold in mercury), and to grind batch-lots of heavy mineral. It is also known as a ball mill. Two strong wooden A frames supporting large iron pivotable bowl with a large iron ball inside the bowl. There are cogs underneath bowl which are connected to rotating belts extending from main battery shaft. The chute attached below the bowl is directed into a circular metal container. The frame is painted green.

This silver trophy is named "Sir W. Clarke's Trophy" after its donor. Sir William John Clarke, Baronet, who was a citizen and philanthropist, well known in Melbourne and throughout Victoria. He gave donations to many public projects including Melbourne University and was a patron of many and varied sports. He encouraged the defence services with prizes for competitions among both military and naval forces. In colonial Australia in the 1880s there was an increase in the size of the colonial military forces, rising from 8,000 in 1883 to 22, 000 in 1885. In 1885 there was a return of unpaid volunteer soldiers, along with a fear of a Russian attack on Australia. As a result, the Sir W.J. Clarke's Trophy was given as a prize in 1885 to Victorian Militia Garrison Battery competition winners, for artillery firing target accuracy. On 12th December 1885, the conclusion of the first artillery competition for Sir W. Clarke's Trophy was held at the Williamstown battery. The first winner of the Sir W. Clarke's Trophy was the Geelong Garrison Battery, with the prize Sir W. Clark's Trophy presented to them in 1886. In 1887 Warrnambool Garrison Artillery, under the command of Major W.S. Helpman, was the proud winner of the Sir W. Clarke’s Trophy. The contest was held at Point Gellibrand with the trophy formally unveiled at the Warrnambool orderly-room on 3rd August 1887. In June 1892 the annual competition was held at the Gellibrand battery in Williamstown. The canvas targets were moored at sea and fired upon from three breech-loading guns mounted on disappearing carriages. Each team was allowed 4 shots fired from each of the 3 guns. An article in the Portland Guardian stated that "the Warrnambool team is certainly looked upon as the certain winners." The same article reported that In this particular year the Government withdrew its previous award of 10-pound cash to the men of the winning team, described in the Portland Guardian as a petty economy of the Government. As the Warrnambool Militia Garrison Artillery had won the Trophy, for the third time, they became Absolute Possessors of the prize. The Trophy is locally significant to the community of Warrnambool for its connection to the Warrnambool Volunteer Rifle Corps., which formed part of the original Warrnambool Garrison to protect the Warrnambool Harbour. The site of the 1888 Warrnambool Garrison and Fortifications is Victorian State Heritage-listed is significant for its intact and operational nature and is one of the best-preserved pieces of Victoria's early colonial heritage.This is the Sir W. Clarke's Trophy for the Victorian Militia Garrison Artillery, first presented in 1886. The silver trophy with lid rests on a square black timber base that displays award shields on each side edge. Inside the hollow trophy is a removable copper alloy bowl with a wide edge. The inner walls of the trophy are unpolished and there is a metal bracing plate between the sides and fitted metal bolts with nuts and washers. near the base. The large, elaborately decorated, silver bowl has a conical pedestal, two handles on the top edge of the bowl and a matching fitted lid. Much of the decoration is three-dimensional. Fine, detailed decoration includes a semi-kneeling figure with an upturned face on top of the lid, vine-like handles resting on necks of swans with outspread wings, figures seated on a ridge, two on each side, with ends of limbs hanging over the ridge, two holding lyres, patterns of leaves, flowers and draped ribbons. The timber base is painted black on the outside. The engraved silver shields around its sides have inscriptions of trophy winners and the name of the trophy. There is a handwritten, pencil inscription of the date 1887 under the timber base. The first award was made in 1886 and the last in 1892. The Warrnambool Garrison wond this trophy three times, including the last award given.Front centre large shield; “VICTORIAN MILITIA / GARRISON ARTILLERY / SIR W. CLARKE’S / TROPHY” Left side, right shield; “1886 / WON BY / GEELONG / GARRISON BATTERY / Major J PRICE / COMMANDING OFFICER” Front, right shield; ” 1887 / WON BY / WARRNAMBOOL / GARRISON ARTILLERY / Major W.S. Helpman / COMMANDING OFFICER” Left side shield: “1888 / WON BY / NORTH MELBOURNE / Garrison Battery / Major F.R.Y. Goldstein / Commanding Officer” Right side, left shield; “1889. / WON BY / WARRNAMBOOL / Garrison Battery / Major W.S. Helpman / Commanding Officer” Right side, centre shield; “1890 / WON BY / HARBOUR TRUST / BATTERY / Major J.H. Haydon / Commanding Officer” Right side, right shield; “1891 / WON BY / WILLIAMSTOWN / BATTERY /l Major W.H. Hall / Commanding Officer” Back, left shield; “1892 / WON BY / WARRNAMBOOL / Garrison Battery / Major W.S. Helpman / Commanding Officer” In pencil underneath timber base “1887”flagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, sir w. clarke's trophy, warrnambool volunteer rifle corps, statistics of warrnambool volunteer rifle corps, warrnambool volunteer rifle company, warrnambool rifle volunteers, warrnambool garrison, 1886, 1887, 1888, 1889, 1890, 1891, 1892, trophy, garrison, competition, prize, winners

Kids of all ages enjoy the Miniature Railway. Published: Nillumbik Now and Then /​ Marguerite Marshall 2008; photographs Alan King with Marguerite Marshall.; p163 On Sundays in Eltham thousands of children, mums, dads and grandparents can be seen travelling around Lower Eltham Park in tiny trains. They are among the two and half million passengers who have travelled on the Diamond Valley Railway since it officially began in 1961. The miniature railway originally operated from the 1940s at Chelsworth Park, Ivanhoe, until flooding caused it to be moved to the Eltham Lower Park in 1959. The railway is modelled on the 1920s era – the heyday of passenger rail travel – and the trains are built on a scale of two inches to the foot (1/6). Although not exact replicas, trains include models of the Spirit of Progress, Puffing Billy, The Overland, Dog Boxes, Vic Rail S class, G class and a NSW 81 Class. The three and a half kilometres of track is set amongst native plants and picnic areas. A friendly hoot or the clang of a bell occasionally punctuates the tranquillity as a train emerges from a treed bend with passengers excitedly waving to onlookers. For $3 the train takes you on a 13-minute two-kilometre ride. Passengers sit in single file in the narrow train, which clatters along tracks built to the scale of the Australian narrow gauge of three feet six inches (1.1m). These are used in Queensland, South Australia, Tasmania and Western Australia. Safety standards are stringently kept. Even before you buy a ticket notices tell you that you must wear closed shoes. You can even borrow these, and you are given a pair of socks for the ride! Blue-overalled volunteers check tickets, see you aboard, and drive the train. They are mainly retired men who can at last devote their time to what little boys dream of – playing with trains. Passengers are instructed in safe behaviour, then the station master waves a white flag and off we go. The guard sits at the back with his whistle and green flag at the ready. The winding track, fringed by native trees and bushes planted by volunteers, stands on crown land managed by Nillumbik Council. The train clatters along the track and crosses a bridge over a drain elevated by name to The Blow Fly Creek. We pass by Meadmore Junction at a speed of three kilometres an hour. Then on through a tunnel, accompanied by squeals of delight, and after a few moments of blackness, light glimmers at the end. On we go, past the original platform, along another route past busy Main Road through Pine Creek Station, over a bridge and through another tunnel with more screams of delight.Then a signal stops us before the ‘all clear’ to return to our original point of departure. The railway services its passengers – the largest number of any miniature railway in Australia – with a fleet including: six diesel locomotives, three steam locomotives, eight sets of passenger cars and one battery electric Dog Box set. Members also privately own 20 locomotives and powered carriage sets as well as four carriage sets.1 All the trains are stored on-site in workshops, sheds and a tunnel. The railway is entirely run by volunteers, so that all ticket money is used for maintenance and extensions, and some goes to local charities. Since 1991, the entire railway has been rebuilt, including an upgraded signalling system. About half of the 120 volunteer members are active with about 35 working each Sunday, and a dozen or so working every Wednesday. Members are trained to positions of station assistant, booking officer, train guard, train driver or signalman. Members construct new carriages and locomotives as well as maintaining track, signalling and rolling stock.This collection of almost 130 photos about places and people within the Shire of Nillumbik, an urban and rural municipality in Melbourne's north, contributes to an understanding of the history of the Shire. Published in 2008 immediately prior to the Black Saturday bushfires of February 7, 2009, it documents sites that were impacted, and in some cases destroyed by the fires. It includes photographs taken especially for the publication, creating a unique time capsule representing the Shire in the early 21st century. It remains the most recent comprehenesive publication devoted to the Shire's history connecting local residents to the past. nillumbik now and then (marshall-king) collection, diamond valley railway, eltham lower park

After the 1939 bushfires, the Forests Commission invested heavily in a radically new communications network. After suffering some inevitable delays due to the War, radio VL3AA switched into full operation in October 1945 proudly beaming out 200 watts across the State. But by today’s standards, the technology was primitive and the reception poor unless the user was on a high point somewhere. The radio signal was "line-of-sight" and bounced between fire towers and relay transmitters across the mountains back to the District offices. Rapid improvements in technology led to various models of bulky handheld portables with heavy batteries that always seemed to go flat. In fact, batteries were a constant impediment at bushfires. The more secure and versatile State Mobile Radio (SMR) digital trunk system came into operation in about 1995. Upgraded Tait Radios were purchased in 2014 after recommendations of the 2009 Bushfires Royal Commission. But it was the convergence of separate technologies such as 4G mobile phones, high-capacity and light-weight lithium batteries, Wi-Fi, the ever-expanding internet, cloud data storage, digital cameras, GPS, personal organisers and hundreds of supporting Apps into powerful smartphones and tablets which revolutionised bushfire communications from the mid-2000s.Portable UHF Radio with leather carrying case and strap. Charging station. Kyodo Model KC-1109 MOYHU Whitfieldbushfire, radios, forests commission victoria (fcv)

After the 1939 bushfires, the Forests Commission invested heavily in a radically new communications network. After suffering some inevitable delays due to the War, radio VL3AA switched into full operation in October 1945 proudly beaming out 200 watts across the State. But by today’s standards, the technology was primitive and the reception poor unless the user was on a high point somewhere. The radio signal was "line-of-sight" and bounced between fire towers and relay transmitters across the mountains back to the District offices. The more secure and versatile State Mobile Radio (SMR) digital trunk system came into operation in about 1995. Upgraded Tait Radios were purchased in 2014 after recommendations of the 2009 Bushfires Royal Commission. But it was the convergence of separate technologies such as 4G mobile phones, high-capacity and light-weight lithium batteries, Wi-Fi, the ever-expanding internet, cloud data storage, digital cameras, GPS, personal organisers and hundreds of supporting Apps into powerful smartphones and tablets which revolutionised bushfire communications from the mid-2000s.Base station radio with handsetRC-4B Amalgamated Wireless Australiabushfire, radios, forests commission victoria (fcv)