Showing 79 items
matching code of signals
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Parks Victoria - Wilsons Promontory Lightstation
Lamp, Aldis
The lamps were pioneered by the British Navy in the late nineteenth century and introduced by the Royal Australian Navy after 1918, and continue to be used to the present day. Manufactured in 1960, the Wilsons Promontory lamp was provided to the lighthouse by the Department of Shipping for signalling ships but was also used for communicating with Cliffy Island, 18 nautical miles away. This type of lamp was renowned for its brilliant light, and lightkeepers from the two lightstations ‘used to practice their signalling with each other, as its effective use was reliant on precise positioning of the scope which is located on top of the lamp’. The inside of the case is imprinted with ‘RAN (Royal Australian Navy), and details on the lamp include a serial number, the date of 1960 and the initials of the Department of Transport, which at that time incorporated the Commonwealth Lighthouse Service. Another Aldis lamp and case with a date of 1960 is held at Cape Nelson and third lamp and case is at Point Hicks; (date unconfirmed but possibly 1943). A fourth lamp and case formerly at Cape Schanck disappeared from the collection sometime between 1995 and 2003.Aldis lamp and case (WPLS 0003.2; likely provenance) The lamps are not rare in museum collections however the Wilsons Promontory example has a confirmed provenance to the lightation and has first level contributory significance as a fine example of the Aldis lamps that were distributed to lightstations throughout Victoria and Australia.1. Handheld black signaling lantern with trigger mechanism. Glass front with inner reflective disc. Black electrical cord is attached with a two pronged plug at the end. 2. Black painted wooden box for transporting lantern. brass catch, leather handle. Grey electrical cord inside plus transformer. Hinged lid. The Aldis lamp is portable, hand held visual signalling lamp with trigger mechanism and inner reflective disk used for optical communication via Morse code. The concave mirror is tilted to focus the light into pulse signals. Larger versions of the lamp are fixed on ships or pedestals and have shutters in front of the device that are opened and closed to transmit signals. Wilsons Promontory’s black metal Aldis lamp and attached electrical cord has a black painted wooden carrying case with metal clasp and leather hand grip.1. On trigger;"AP16413" Around V shaped protrusion attached to lamp "AP197873 / AEI .LTD 59" Beneath screw on face;"AD16415" Inside lamp, under glass;"ADMIRALTY PATTERN 16409 / 5 INCH HAND SIGNALING LANTERN SERIAL No. 212 Year 1960 / AEI PTY LTD SYDNEY" •2. Box. On brass plate below handle."ADMIRALTY PATTERN 16409 / BOX FOR TRANSPORTING LANTERN / PATTERN 16409" Inside box on side of metal insert attached to inside of box;"EXTRA LOW VOLTAGE TRANSFORMER / MADE BY / M.Brodribb, Melbourne/ cat & APP / No v/QR / 1811A / 50 / 60 va / CONT. 55 c / RATIO 240, 12 V TAPS " Top of metal box on sticker;"C of A / D.O.T 143076 / 12 V 5A" On Bakelite plug on metal box;"EXTRA LOW VOLTAGE" -
Parks Victoria - Cape Nelson Lightstation
Instrument - Morse Code Key Set
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 -
Parks Victoria - Cape Nelson Lightstation
Instrument - Lamp, Aldis
This portable, hand held visual signaling lamp, with trigger mechanism and inner reflective disk, was used for optical communication via Morse code, with the concave mirror tilted to focus the light into pulse signals. Larger versions of these lamps are fixed on ships or pedestals and have shutters in front of the light that are opened and closed to transmit signals. Smaller hand held versions like the Cape Nelson example have a concave mirror that is tilted to focus the light into pulse signals, and despite their size the lamps were renowned for their brilliant light. Invented by Arthur C W Aldis (1878‐1953) and pioneered by the British navy in the late nineteenth century, they continue to be used to the present day. Details on the Cape Nelson lamp include a serial number, a date of 1960 and the initials of the Department of Transport, which at that time incorporated the Commonwealth Lighthouse Service. Another lamp of the same date which is held at Wilsons Promontory was provided to the lighthouse by the Department of Shipping for signaling ships but was also used for communicating with Cliffy Island, 18 nautical miles away. Point Hicks also has an Aldis lamp and an associated case, which is painted an army green colour. A fourth lamp and case formerly at Cape Schanck disappeared from the collection sometime between 1995 and 2003. These types of lamps are not rare in museum collections.These types of lamps are not rare in museum collections however the Cape Nelson example has a reliable provenance to the lightstation and has first level contributory significance as a fine example of the Aldis lamps that were distributed to lightstations throughout Victoria and Australia.This object is comprised of a black metal encased Aldis lamp with electrical cord and associated wooden carrying case with metal clasp and red leather hand grip. yes -
Parks Victoria - Point Hicks Lightstation
Lamp, Aldis
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" -
National Vietnam Veterans Museum (NVVM)
Booklet, British Army, Signal Communications In The Army, Volume IV: Procedures, Pamphlet 11, Communication Security, 1965
A blue coloured cardboard cover with black information on the front. Near the top right corner reads Army Code No 70118. There are two punch holes and two rusted metal staples down the left hand side.british armed forces - service manuals, signal communications, security -
Flagstaff Hill Maritime Museum and Village
Equipment - EPIRB Transmitter
This distress EPIRB unit (Emergency Position Indication Radio Beacon) was found on the beach at Levy's Point, Warrnambool, in December 2000 by a Warrnambool resident. Local police were alerted at the time. This distress signal unit is a world-wide COSPAS/SARSAT, satellite assisted, SAR (Search and Rescue) system for location of distress transmissions emitted by an EPIRB. Offshore cruising vessels must have such a unit as part of its essential safety equipment. This model EPIRB relies on four satellites with orbit times of approximately 100 minutes. Earlier units relied solely on aircraft flying overhead to detect and forward on the EPIRB’s location to Search And Rescue authorities, whereas this new system utilises satellites. An employee from the Lokata firm provided additional information about the Lokata EPIRB units. They had a machined aluminium case with labels that were also made on site. The units could be activated manually or automatically released when a magnetic switch in the case casing was activated. This later model, circa 1983, would have been mounted externally on a vessel's bulkhead in a spring-loaded, stainless-steel protective 'skeleton' mounting, The unit released when the water pressure sensor detected a set time it was under the water, in a similar way that life crafts were released. Each unit was registered to a particular vessel - the vessel's details on this unit are indecipherable. The Lokata Company was established in 1970, designing and manufacturing marine products including communications. The company no longer makes products with the “Lokata” brand. In 2001 Sartech Engineering Ltd. took over the support for the Lokata EPIRB beacons. This emergency location device is a late 20th century invention to help save lives at sea. It adds to the history of maritime life, its risks, the lives lost as sea, and the many inventions aimed as rescuing and saving lives. The local area is notorious for the number of lives lost through shipwreck. It also carries stories of heroic efforts to save lives, and other inventions to help reduce the chance of accidents at sea.EPIRB unit; “Emergency Position Indication Radio Beacon”. A distress communication unit for sending a distress location transmission in an emergency at sea. The EPIRB is a yellow, rectangular box with dials, buttons, indicator lights and instruction. An antenna protrudes from the top of the unit. The EPIRB unit sends a 406P (X) EPIRB, with 406M-Hz frequency, 48-hour duration signal. The maker was LOKATA Ltd in England. Remnants of a white label remain on the side. Circa 1980s."NAME OF VESSEL 'SERVICE IF SELF TEST FAILS' " “LO-KATA” moulded into the body. "406P (X) EPIRB" “Model 406” "Lokata Type No 92408" "UK Type approved to MPT 1278" "Class 2" "Made by Lokata Ltd, Falmouth Cornwall England TR10 8AE"" "LOKATE LTD. New North Road Hainault, Ilford Essex IG6 2UR" "ARMED / SAFE / TRANSMIT / CODE / DISPLAY / SET / wait / pass / fail / TEST" "IDENTIFIER / 1349:24034234N" [some characters may be different] "COUNTRY / DENMARK" "VESSEL IDENTITY / 124 [the rest is indecipherable]flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, emergency position indicating radio beacon, epirb, lokata ltd, marine safety equipment, satellite transmitting beacon, safety equipment, distress signal, life saving, safety at sea, shipwreck location, lo-kata, falmouth, emergency, beacon, radio signal, communication, marine equipment -
Bendigo Military Museum
Instrument - Heliograph Mk V Training Aid - circa 1912, 1912
The Heliograph MkV is a fascinating piece of historical surveying and communications equipment. It was primarily used for visual signaling by reflecting sunlight with a mirror to send coded messages over long distances. This method was primarily useful in remote areas where other forms of communication were not available. The MkV model, specifically, was widely used by the British Army and other military forces from around 1906 until the mid 1960s. It remained in use with the Australian Army Survey Corps until the mid 1980s. The device typically included a 5 - inch mirror and was often mounted on a tripod for stability. Initially the instrument was used to communicate between survey stations using Morse code to coordinate their activities. Later when better forms of communication were available they were used for precise angle alignment where the sunlight reflection from the mirror was targeted between the survey stations to give very accurate results. The MkV was relatively light weight and portable, making it ideal for use in the field. It could be setup and adjusted quickly. The heliograph had an adjustable mirror that could be tilted to reflect sunlight towards a distant receiver. Surveyors could align the mirror using a sighting device. Whilst it was primarily used by the Military it was also used in civil surveying particularly in the remote areas of Australia. This instrument was used as a training aid to help teach surveyors at the Royal Australian Survey Corps School of Military Survey. Catalog item No 2009 is a tripod that was used to mount the Heliograph whilst being used for surveying.A Heliograph containing two mirrors with brass surrounds mounted on a wooden board as a Training Aid. Item has additional parts attached to the base board."Heliograph Mk V Training Aid"royal australian survey corps, rasvy, fortuna, army survey regiment, army svy regt, asr -
National Vietnam Veterans Museum (NVVM)
Booklet, Australian Army, Australian Army: Signal Training (All Arms), Pamphlet No. 4: Wireless Signalling: Supplement No. 1, VHF, 1957, 1957
A blusish coloured cardboard cover with black information of the front. Top right hand side reads WO Code No. 9445. There are three punch holes down the left hand side. There is some water damage on the cover.australia - armed forces - service manuals, signal training, wireless signalling -
Flagstaff Hill Maritime Museum and Village
Equipment - Foghorn, 20th century
... . These common signals conform to a code called the International.... These common signals conform to a code called the International ...A marine foghorn gives an audible navigational signal to warn vessels of dangers, hazards and the presence of other vessels in fog conditions. The foghorn signal is a series of long and short sounds with short or long pauses between them. These common signals conform to a code called the International Regulations for Preventing Collisions at Sea and provide such information as whether the vessel is under sail or motor, large or small, aground or at anchor. The designs of foghorns vary but they all use a column of air to make a loud sound. Some use vibrating plates or metal reeds, others force air through holes in a revolving cylinder or disc, sounding like a siren, and some use a clockwork mechanism to open the valves that let the air into the horn. They are usually built to meet particular specifications e.g. U.S.C.G. (US Coast Guard). This Tyfon plunger foghorn has a horizontal handle attached to a vertical rod that moves up and down inside a cylinder. When the handle is plunged down, in a similar way to a bicycle pump, the air is forced out of the bottom of the cylinder into a pipe with a bell-shaped horn on the end, making a loud, low sound. The wider base of the cylinder helps to keep it stable. The original type Tyfon foghorns were manufactured in about 1910 by Kochums Mechanical Workshop (Kockums Mechanical Werkstad, Ltd.), Malmo, Sweden. The company was established in 1840, became a Limited company in 1866, and established a shipyard at the Port of Malmo, Sweden, in 1870. The civilian ship production in Malmo ceased in 1987. As well as building ships the company built large industrial and agricultural machinery and maritime goods.this replica foghorn represents the design of a Swedish, Tyfon model 1910. It is an example of the type of safety equipment used on marine vessels to signal other vessels and signal to land. Replica foghorn; portable marine, plunger operation. It has a brass cylinder and adjustable brass horn. The plunger handle and base are wooden. Inscriptions are on the plaque on the horn and moulded into the air intake. Facsimile of a Kockums of Malmo, Sweden, Tyfon model 1910 Fog Horn.Impressed into the attached plaque "KOCKUMS MLK. VERKSTAD / MALMO SWEDEN" and "TRADE TYFON MARK" Also added to the plaque individually "288938" Molded around the circumference of the air intake "TYFON PATENT"flagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, foghorn, fog horn, tyfon foghorn, kockums mlk verkstad, malmo sweden, replica, warning signal, safety equipment, ship's equipment -
Flagstaff Hill Maritime Museum and Village
Document - Log Book page, 21/10/1805
... from the vessel HMS Euryalus, recording Nelson's famous signal ...This document is a reproduction of the page of the log book from the vessel HMS Euryalus, recording Nelson's famous signal at the Battle of Trafalgar. On October 21, 1805, Admiral Lord Nelson led the British Navy to victory against the French and Spanish navies in the Atlantic Ocean. The event became known as the Battle of Trafalgar. To commence the battle Nelson commanded his now-famous flag signal “England expects that every man will do his duty”. Nelson’s signal was transmitted from his ship HMS Victory in 12 separate flag-hoists, according to Sir Home Popham’s Telegraphic Code that had been supplied to the fleet as an experiment, with the numerical flags of the Admiralty official Day Signal book (1799 issue). The signal flags comprised eight that represented whole words and four that represented single letters - [ENGLAND] [EXPECTS] [THAT] [EVERY] [MAN] [WILL] [DO] [HIS] [D] [U] [T] [Y]. Nelson’s signal was received by the ‘reporting frigates’ who would then send them on to the other vessels. The signal was recorded by Captain Henry Blackwood who was in command of the HMS Euryalus. Captain Blackwood led a squadron of frigates, reporting back to Nelson on the movement of the French and Spanish fleets. Nelson’s famous signal was recorded in the log book of Euryalus and repeated to other vessels. The original log book is a canvas-backed manuscript written up from hour to hour during the battle. It is in the Nelson Collection at Lloyd's. Lloyd’s of London is a large insurance company in the United Kingdom. In 1803 Lloyd’s founded the Lloyd’s Patriotic Fund to honour the brave and provide for the wounded and dependents of those killed in major Napoleonic battles. Over the years Lloyd’s has accumulated an assorted collection of artefacts and memorabilia associated with Nelson, including this log book from HMS Euryalus. In 2003 Lloyds created a temporary exhibition to mark the bicentennial of Nelson’s Battle of Trafalgar. The display included key items from the Nelson Collection celebrating Nelson’s role in British Naval History. Lloyd’s now has a department called The Nelson Collection and Heritage Floor where historical artifacts are displayed and the story of Lloyd’s 300 years of history is told. This document, being a reproduction, is not significant in itself. However it's content is of historical significance for its connection to Admiral Nelson and The Battle of Trafalgar. Through the leadership and victory of Nelson, the British obtained the mastery of the seas over the French and Spanish and opened up the way for Britain to colonise many countries including Australia. The document is also associated with a wood sample from Napoleon's ship Victory that is in our Collection.Reproduction of a page of the log book of HMS Euryalus recording Nelson's famous signal at the Battle of Trafalgar. The original log book entry was handwritten, dated 21 Oct 1805.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, log book, flag signal, hms euryalus, nelson's famous signal, battle of trafalgar, october 21, 1805, admiral lord nelson, french and spanish navies, england expects that every man will do his duty, hms victory, sir home popham’s telegraphic code, admiralty official day signal book (1799 issue), reporting frigates, captain henry blackwood, canvas-backed manuscript, nelson collection at lloyd's, lloyd’s of london, lloyd’s patriotic fund, napoleonic battles, british naval history -
Flagstaff Hill Maritime Museum and Village
Postcard - Vessel, Sailing Ship, after October 1805
... telegraphic code admiralty official day signal book october 21, 1805 ...The British Royal Navy’s warship HMS Victory was once Lord Nelson’s flagship. The HMS Victory was built in 1765 and after serving active duty is now, in 2019, still a ship of the Royal Navy, in dry dock undergoing continuous restoration to preserve her for display as a museum ship, due to the vessel’s significant naval history. Battle of Trafalgar: On October 21, 1805, twenty-seven British ships of the line, led by Admiral Lord Nelson aboard HMS Victory, defeated thirty-three French and Spanish ships of the line under French Admiral Villeneuve. The battle took place in the Atlantic Ocean off the southwest coast of Spain, just west of Cape Trafalgar, near the town of Los Caños de Meca. The victory confirmed the naval supremacy Britain had established during the course of the eighteenth century and it was achieved in part through Nelson's departure from the prevailing naval tactical orthodoxy of the day. Conventional practice at the time was for opposing fleets to engage each other in single parallel lines, in order to facilitate signalling and disengagement and to maximise fields of fire and target areas. Nelson instead arranged his ships into two columns to sail perpendicularly into the enemy fleet's line. During the battle, Nelson was shot by a French musketeer and he died shortly before the battle ended. Villeneuve was captured, along with his ship Bucentaure. He later attended Nelson's funeral while a captive on parole in Britain. Admiral Federico Gravina, the senior Spanish flag officer, escaped with the remnant of the fleet. He died five months later from wounds sustained during the battle. It was prior to this battle that Nelson had issued his now-famous final orders to his ships in 12 separate flag-hoists “England expects that every man will do his duty”. This wood sample is historically significant for its association with Admiral Lord Nelson the Battle of Trafalgar. Through Nelson’s leadership and unorthodox battle tactics, he secured not only a victory against the French and Spanish but reaffirmed Britain's naval supremacy opening the way for Britain to continuing the policy of colonisation of many countries including Australia.A coloured postcard of a sailing ship, warship or battleship, deck cannons on the ship and in the foreground, many signal flags flying from the masts. Printed on the front "H.M.S. Victory Flying Lord Nelson Famous Signal". The signal was given by Lord Nelson in 1805.Printed on the front "H.M.S. Victory / Flying Lord Nelson Famous Signal"flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, post card, postcard, sailing ship, vice-admiral lord nelson, horatio nelson, lord nelson, oak piece, piece of oak, nelson, battle of trafalgar, maritime technology, ship relics, 18th century warship, british royal navy, sir home popham’s telegraphic code, admiralty official day signal book, october 21, 1805, admiral lord nelson, french and spanish navies, nelson's famous signal, england expects that every man will do his duty, hms victory, nelson collection at lloyd's, lloyd’s of london, lloyd’s patriotic fund, napoleonic battles, british naval history, 18th century warship, 18th century battleship -
4th/19th Prince of Wales's Light Horse Regiment Unit History Room
Pamphlet, AHQ Press, Signal Tactics Part IV, 8/2/1946
... Training manual used by the Regiment books signal training ...Training manual used by the RegimentSoft covered stapled book detailing the principles of armoured communications and armoured wireless nets etcCode No 7014books, signal training, armoured corps -
Bendigo Military Museum
Manual - TRAINING MANUAL - SIGNALLING, SIGNALLING, 1915
... signalling morse code ww1 Training manual for signalling ...Training manual for signalling methods on various aspects of the codesignalling, morse code, ww1 -
Bendigo Military Museum
Manual - HANDBOOK, His Majesty's Postmaster General et al, Wireless & Telegraph Operators, 1932
... annexes. Illustrated advertising. Text regarding signals, morse...books-manuals/reference/military/signals Wireless Khaki ...Khaki coloured soft cover with black print. At the bottom is a symbol of His Majesty's Stationery Office, London. 123 pages plus annexes. Illustrated advertising. Text regarding signals, morse code & message procedures.books-manuals/reference/military/signals, wireless -
Bendigo Military Museum
Manual - ARMY SIGNALS SERIES, c.1939-45
... Signals, Army call sign book .6) R/T (radio telephone) Code Book ...Benjamin Thomas Roy Chadd No's 10594, VX20311, 1st and 2nd AIF. Refer 2039 for service history also 2034P. .1) Booklet, Aust Corps of Signals Vol 1 No 1 dated 1.2.1929 .2) Sig Order - Changes in Procedure WWII, 7 sheets 7 Aust Div .3) Training Memo Royal Signals, line & radio telephony .4) Training Memo Royal Signals, single call sign procedure .5) Training Memo Royal Signals, Army call sign book .6) R/T (radio telephone) Code Book.3) Has BTR Chadd signature top of front page .4) Has BTR Chadd signature top of front page .5) Has BTR Chadd signature top of front pagedocuments - booklets, books-technical, military history -
Bendigo Military Museum
Manual - BASIS FIELD SIGNALS USA, War Department USA, 21.2.1944
... USA booklet FM24-13 containing large lists of Signalling Q... containing large lists of Signalling Q Codes. Spiral bound, 96 pages ...USA booklet FM24-13 containing large lists of Signalling Q Codes. Spiral bound, 96 pages.books-military/manuals, signals, us -
Bendigo Military Museum
Instrument - Duplex Heliograph Mk V - 1940 with Tripod, LUCO Art Metal Coy Ltd, London, 1940
The Heliograph MkV is a fascinating piece of historical surveying and communications equipment. It was primarily used for visual signaling by reflecting sunlight with a mirror to send coded messages over long distances. This method was primarily useful in remote areas where other forms of communication were not available. The MkV model, specifically, was widely used by the British Army and other military forces from around 1906 until the mid 1960s. It remained in use with the Australian Army Survey Corps until the mid 1980s. The device typically included a 5 - inch mirror and was often mounted on a tripod for stability. Initially the instrument was used to communicate between survey stations using Morse code to coordinate their activities. Later when better forms of communication were available, they were used for precise angle alignment where the sunlight reflection from the mirror was targeted between the survey stations to give very accurate results. The MkV was relatively light weight and portable, making it ideal for use in the field. It could be setup and adjusted quickly. The heliograph had an adjustable mirror that could be tilted to reflect sunlight towards a distant receiver. Surveyors could align the mirror using a sighting device. Whilst it was primarily used by the Military it was also used in civil surveying particularly in the remote areas of Australia. The British Army Mark V version uses a flat round mirror with a small unsilvered spot in the centre. The sender aligned the heliograph to the target by looking at the reflected target in the mirror and moving their head until the target was hidden by the unsilvered spot. Keeping their head still, they then adjusted the aiming rod so its cross wires bisected the target, they then turned up the sighting vane, which covered the cross wires with a diagram of a cross, and aligned the mirror with the tangent and elevation screws, so the small shadow that was a reflection of the unsilvered spot hole was on the cross target. This indicated that the sunbeam was pointing at the target. If the sun was in front of the sender, its rays were reflected directly from this mirror to the receiving station. If the sun was behind the sender, the sighting rod was replaced by a second mirror, to capture the sunlight and direct it onto the main mirror to reflect it to the receiving station.. 1 Brish Army "Mance" Mk V A253 Heliograph has two 125mm diameter mirrors on a brass arm with targeting attachments. The Instrument is mounted on a three-legged tripod of brass and mahogany with spiked feet, approximately 1.2 metres high. The instrument was made by LUCO Art Metal Co Ltd, London in 1940. .2 A military green metal carrying safety storage case with khaki shoulder strap.A253 stamped on instrumentroyal australian survey corps, rasvy, fortuna, army survey regiment, army svy regt, asr -
4th/19th Prince of Wales's Light Horse Regiment Unit History Room
Book, Signal Training (All Arms) 1938, at 1938
Hard covered book detailing Phonetic Alphabet, Morse and Semaphore Codes, Visual Instruments, Field Cables, Wireless Sets etc26 Manuals 1875manual, signals training -
Victorian Railway History Library
Book, Dargan, James, Morse to Micro: A History of NSW Railways Communications, 1988
A history of communications systems on the NSW railways from morse code to microcircuit electronic communications from 1857 to 1987.index, ill, p.105.non-fictionA history of communications systems on the NSW railways from morse code to microcircuit electronic communications from 1857 to 1987.railroad signalling - new south wales - history, railroad operations - new south wales - history