Dr. Joseph Clover (1825-1882), an English physician, first described his Portable Regulating Ether Inhaler on Jan. 20, 1877. Clover was an especially sought after anesthesiologist and early pioneer in the specialty. This was the best-known of many inhalers that Clover designed. The dome-shaped reservoir was turned to points on a control dial to gradually increase or decrease the percentage of the air that passed over the ether. Several inventors based new inhalers on this, while the original continued to be manufactured as late as the beginning of WWII. (Source: Wood Library Museum)Black round topped box with brass hooks at front and brass hinges at rear. There is a black fabric handle on the top. Inside the box is black padding with the manufacturer's logo printed in gold leaf. There is a square section in the base of the box for holding the square clear glass bottle for ether. There is also a dome-shaped metal inhaler with a "whistle tip" type connection to the mask. The mask is made of tan leather. There is also a metal ether measure for pouring the ether.Printed in gold leaf inside lid of box: MAYER & MELTZER [?] PORTLAND ST. / MAKERS •Engraved on side of inhaler: Mayer & Meltzer / London •Stamped on connector of inhaler: MAYER & MELTZER RN NO 212327 •Engraved on rear of inhaler: Clover's Inhaler •Printed in white on blue sticker: O.2.5A •Measurements have been stamped on the bottom of the inhaler. •Printed in black ink on mask: MADE IN ENGLAND •Stamped on metal connector inside mask: 6 •Printed in black ink on white manufacturer's label on glass bottle: ETHER PURUS '720 / H. Francis & Co., Melbourne.clover, joseph, mollison, crawford henry, george bankin, mccaul, kevin, royal women's hospital, coroner, freemason, surgeon, gynaecologist, obstetrician, mayer & meltzer, francis & co, melbourne, ether purus

The Pace Stick is used to measure the correct length of pace. Rhythm and uniformity in marching is achieved by using the Pace Stick as well as the drum and metronome. Correct pace length is necessary not only for ceremonial purposes, but also to reduce fatigue on long marches and set the standard of accuracy required of soldiers. The Pace Stick is actually two pieces of timber, hinged at the top and able to be set to a particular distance, something like the compass set you used at school.

Faded coloured photograph of the 2002 Football Carnival Team and their coach. Their names are: Back: Hayden Dixon, Daniel Dole, Kyle Owen, Jamie Lock, Andy Rosos, Josh Gordon, Doug Holt, Jye Gibson. Centre: Shane Rodda, Rhys Wardle, Henry Anderton, Nick Lancaster, Dylan Holliday, Brett Monti, James Logan, James Rooke. Front: Scott Owen, Michael Measures, Luke Scoble, Matthew Hope.education, primary, golden square laurel st p.s., golden square laurel street p.s. collection - photograph - football carnival 2002, hayden dixon, daniel dole, kyle owen, jamie lock, andy rosos, josh gordon, doug holt, jye gibson, shane rodda, rhys wardle, henry anderton, nick lancaster, dylan holliday, brett monti, james logan, james rooke, scott owen, michael measures, luke scoble, matthew hope

Established in 1870, the National (renamed the Royal in 1890) Agricultural Society of Victoria, uses 'Speed the Plough' as its motto which is embossed on the medal. The engraved part of this medal reads “City of Caulfield Horticultural Display 1981, 1st Prize".Round, gold plated medal measuring 50mm in diameter with "The Royal Agricultural Society of Victoria" embossed around edge, an engraved central plate with an embossed representation of a sheep above and cattle below. The engraved side of the medal has "The Royal Agricultural Society of Victoria" around the edge, and the engraved part in the middle reads "CITY of CAULFIELD / HORTICULTURAL DISPLAY / 1981 / 1st Prize". Observe side reads "SPEED THE PLOUGH / RASV / ROYAL SHOW".

George James McFarlane was born on 19 August 1895 in Wodonga, Victoria. He was the youngest son of Charles John McFarlane and Emily Charlotte nee Ellis. He married Margaret Frances Kirley in Wodonga in 1918 and they had 6 children. George kept this diary for most of 1927. It documents his daily life and some local events. George worked part time with the local blacksmith and then on his own farm before and after work. He was later to take over the blacksmith himself, operating as a blacksmith and farrier from premises in High Street, Wodonga. George's diary documents his daily dedication to other jobs on the farm including trapping and shooting vermin such as rabbits and foxes, growing watermelon and vegetables and training horses. He also became a member of the Albury Coursing Club. In his later years, George moved to Euroa and then fo the Northcote and Broadmeadows area of Melbourne where he died in 1968.A small diary with cardboard cover including volume and publisher details within a border. A red and white retailer sticker has been adhered to the front cover. The diary includes a calendar for 1927 and 37 pages of information including postal, money order and telegraphic information, British weights and measures and Directions for Making a will. The remainder of the diary is divided into 3 days per page. Entries have been entered until 28 August 1927.On front Cover: INVICTA AUSTRALIAN 1927 ROUGH DIARY / No 6 WITH THREE DAYS ON A PAGE / Price 2s. /PRINTED AND PUBLISHED BY SANDS & MCDOUGALL PTY. LTD. / SOLD BY ALL STATIONERS. On a circular sticker adhered at lower edge: BLAKE'S BUSY BOOK BAZAAR/ AND MUSIC WAREHOUSE/ ALBURY Handwritten on front: G J. McFarlane/ Wodonga/ Jan 1st 27g. j. mcfarlane, mcfarlane family wodonga

Zilles Printers was begun by Lewis Zilles in the early 1930s. It was in McKenzie Street Ballarat. His son Jeffrey also became a printer - letterpress, offset and screen printer. The business became Zilles Printers/Graphics and was in Armstrong Street and later Bell Street Ballarat. Images of dacals for instrument dials for dashboards - petrol, water, air, speedometer, oil, amperes,Transparencies and printed copies of decalsModel makes and implement nameszilles printers, decals, instrument dials, ballarat

This was gifted to Robin William Smallwood on his retirement. Smallwood graduated from medicine in the mid-1950s and decided to make a career in anaesthetics, was granted Fellowship in 1965, became a member of the Board of the Faculty in 1976 and became Dean in 1986-1987. It has been made by Arnold & Sons of London who were medical instrument manufacturers and became Mayer & Meltzer.Silver tube in two pieces, which form an innner and outer tube. The inner tube is curved with a flat plate at the top and two squared hooks (handles) coming off the plate. The outer tube has been spliced, creating two separate curved sides with an oval, bowl-like plate at the end, with an oval shaped holed punched through either side. Attached to the square hook of the inner tube is a green cotton ribbon.Stamped into the bowl shaped plate: ARNOLD & SONS / SILVERsmallwood, robin, •faculty dean, faculty of anaesthetists, royal australasian college of surgeons, ffaracs, racs, fanzca

In this scanned image, from the 1955 RVIB Annual Report, five blind saxophone players hold their instruments on a stage. L-R: Barry Palmer, Arthur Tyzack, Alan Campbell, Dick Sutcliffe (?), John Levercha. They won acclaim for their radio performances in 'Swallows Parade' and 'Floor Coverings Talent Hour,' and its recordings with the A.B.C., and performed in night clubs.B/W scan of saxophone quintetdick sutcliffe, barry palmer, arthur tyzack, alan campbell, john levercha

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)

Black and white photograph of CW5 684, route 70 outbound in Batman Ave. Ray Pearson's photo listing dates the photo as 1937. The CW5 tramcar was effectively a W5 tram using Brill 22E bogies or trucks as an economy measure during the mid-1930s. The trams were underpowered, with MMTB No. 15 bogies being fitted in 1956. Most of the louver sashes have been lifted, indicating a hot day.Yields information about a CW5 class tram and its fitment at the time with Brill 22E trucks.Black and white print with adhesive marks and photographers stamp on the rear.Has "R W O Pearson" stamp on the rear.tramways, tramcars, cw5 class, tram 684, route 70, mmtb, batman ave

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

In 1949 the Commonwealth Forestry and Timber Bureau proposed a national planting program to make Australia more self-reliant in timber products after the shortages experienced during the war. The threat of introduced sirex woodwasp from Europe in the early 1950s and its eventual discovery on the Australian mainland in 1961 brought the softwood plantation program into question. However, quarantine and control measures using tree destruction and a nematode parasite was put in place.Sirex noctilio was a serious threat to softwood plantations in AustraliaSirex wood wasps encased in resinplantations, forests commission victoria (fcv)

Two identical photographs of Quartet seated and playing their instruments in front of music stands. Annotations for 42a. - ''Performing in Bendigo May 7th See Arts Bendigo article Please retain photo for Arts Bgo, ''Return to'' address for ASQ and Musica Viva; 42b. ''The Australian String Quartet See Arts Bendigo story To perform in Bendigo May 7th Please keep photo for Arts Bgo; address label for ASQ and Musica Viva and cropping/publication note.

Framed colour photograph featuring a band in the rotunda at Mossvale Park, Leongatha. The image is taken from inside the rotunda and shows the musicians at their instruments with the conductor in the centre. In the background a large crowd watches on. Brown wood frame. Signed and dated by the photographer lower right corner. Note: Item approved for deaccession August 2023. SGSC will now follow deaccession procedures as outlined in the Arts and Civic Memorabilia Collection Policy - https://www.southgippsland.vic.gov.au/downloads/file/2763/arts_and_artefacts_collection_policy_c69.

Langlands Company History: Langlands foundry was Melbourne's first foundry and iron shipbuilder established in 1842, only 8 years after the founding of the Victorian colony by two Scottish immigrants, Robert Langlands and Thomas Fulton, who had formed a partnership before emigrating (1813–1859). The business was known as the 'Langlands Foundry Co'. Henry Langlands (1794-1863), left Scotland in 1846 with his wife Christian, née Thoms, and five surviving children to join his brother Robert. By the time he arrived in early January of 1847 the partnership of Robert Langlands and Fulton had dissolved as Fulton had gone off to establish his own works. It was at this time that the two brothers took over ownership of Langlands foundry. Several years later Robert retired and Henry became sole the proprietor. The foundry was originally located on Flinders Lane between King and Spencer streets. Their sole machine tool, when they commenced as a business, was a small slide rest lathe turned by foot. In about 1865 they moved to the south side of the Yarra River, to the Yarra bank near the Spencer Street Bridge and then in about 1886 they moved to Grant Street, South Melbourne. The works employed as many as 350 workers manufacturing a wide range of marine, mining, civil engineering, railway and general manufacturing components including engines and boilers. The foundry prospered despite high wages and the lack of raw materials. It became known for high-quality products that competed successfully with any imported articles. By the time Henry retired, the foundry was one of the largest employers in Victoria and was responsible for casting the first bell and lamp-posts in the colony. The business was carried on by his sons after Henry's death. The company was responsible for fabricating the boiler for the first railway locomotive to operate in Australia, built-in 1854 by Robertson, Martin & Smith for the Melbourne and Hobson's Bay Railway Company. Also in the 1860s, they commenced manufacture of cast iron pipes for the Board of Works, which was then laying the first reticulated water supply system in Melbourne. Langlands was well known for its gold mining equipment, being the first company in Victoria to take up the manufacture of mining machinery, and it played an important role in equipping Victoria's and Australia's first mineral boom in the 1850s and 1860s. Langlands Foundry was an incubator for several engineers including Herbert Austin (1866–1941) who worked as a fitter at Langlands and went on to work on the Wolesely Shearing machine. He also founded the Austin Motor Company in 1905. Around the 1890s Langlands Foundry Co. declined and was bought up by the Austral Otis Co. in about 1893. History for Grimoldi: John Baptist Grimoldi was born in London UK. His Father was Domeneck Grimoldi, who was born in Amsterdam with an Italian Father and Dutch mother. Domeneck was also a scientific instrument maker. John B Grimoldi had served his apprenticeship to his older brother Henry Grimoldi in Brooke Street, Holburn, London and had emigrated from England to Australia to start his own meteorological and scientific instrument makers business at 81 Queens St Melbourne. He operated his business in 1862 until 1883 when it was brought by William Samuel and Charles Frederick, also well known scientific instrument makers who had emigrated to Melbourne in 1875. John Grimoldi became successful and made a number of high quality measuring instruments for the Meteorological Observatory in Melbourne. The barometer was installed at Warrnambool's old jetty and then the Breakwater as part of the Victorian Government's insistence that barometers be placed at all major Victorian ports. This coastal barometer is representative of barometers that were installed through this government scheme that began in 1866. The collecting of meteorological data was an important aspect of the Melbourne Observatory's work from its inception. Just as astronomy had an important practical role to play in navigation, timekeeping and surveying, so the meteorological service provided up to date weather information and forecasts that were essential for shipping and agriculture. As a result, instruments made by the early instrument makers of Australia was of significant importance to the development and safe trading of companies operating during the Victorian colonies early days. The provenance of this artefact is well documented and demonstrates, in particular, the importance of the barometer to the local fishermen and mariners of Warrnambool. This barometer is historically significant for its association with Langlands’ Foundry which pioneered technology in the developing colony by establishing the first ironworks in Melbourne founded in 1842. Also, it is significant for its connection to John B Grimoldi who made the barometer and thermometer housed in the cast iron case. Grimoldi, a successful meteorological and scientific instrument maker, arrived in the colony from England and established his business in 1862 becoming an instrument maker to the Melbourne Observatory. Additional significance is its completeness and for its rarity, as it is believed to be one of only two extant barometers of this type and in 1986 it was moved to Flagstaff Hill Maritime Village as part of its museum collection. Coast Barometer No. 8 is a tall, red painted cast iron pillar containing a vertical combined barometer and thermometer. Half way down in the cast iron framed glass door is a keyhole. Inside is a wooden case containing a mercury barometer at the top with a thermometer attached underneath, each with a separate glass window and a silver coloured metal backing plate. Just below the barometer, on the right-hand side, is a brass disc with a hole for a gauge key in the centre. The barometer has a silvered tin backing plate with a scale, in inches, of "27 to 31" on the right side and includes a Vernier with finer markings, which is set by turning the gauge key. The thermometer has a silvered tin backing plate with a scale on the left side of "30 to 140". Each of the scales has markings showing the units between the numbers.Inscription at the top front of the pillar reads "COAST BAROMETER" Inscribed on the bottom of the pillar is "No 8". and "LANGLANDS BROS & CO ENGINEERS MELBOURNE " The barometer backing plate is inscribed "COAST BAROMETER NO. 8, VICTORIA" and printed on the left of the scale, has "J GRIMOLDI" on the top and left of the scale, inscribed "Maker, MELBOURNE". There is an inscription on the bottom right-hand side of the thermometer scale, just above the 30 mark "FREEZING" Etched into the timber inside the case are the Roman numerals "VIII" (the number 8)flagstaff hill, warrnambool, maritime village, maritime museum, flagstaff hill maritime museum & village, shipwreck coast, great ocean road, warrnambool breakwater, coast barometer, coastal barometer, barometer, weather warning, ports and harbours, fishery barometer, sea coast barometer, austral otis co, coast barometer no. 8, henry grimoldi, henry langlands, john baptist grimoldi, langlands foundry co, meteorological instrument maker, robert langlands, scientific instrument maker, thermometer, thomas fulton

In the 18th century, spring scales appeared. To produce these scales, a manufacturer would use the resistance of a spring to calculate weights, which could be read automatically on the scale’s face. The ease of use of spring scales over balance scales is what led most post offices to outfit their clerks with spring postal scales. One of the most common types of spring scales was the kitchen scale—also known as a family or dial scale. Designed for horizontal surfaces, these scales used the weight of goods in a pan at the top of the scale to force the spring down. Such scales were common in early-20th-century households and were sold by Sears and Montgomery Ward. Many had flat weighing surfaces but some were topped by shallow pans. Companies such as Salters, Chatillon, and Fairbanks made both. SALTER HOUSEWARES began in the late 1760 in the village of Bilston, England. At this time Richard Salter, a spring maker, began making 'pocket steelyards', a scale similar to the fisherman's scale of today. By 1825 his nephew George had taken over the company, which became known as George Salter & Co. and later established a large, well equipped manufacturing site in the town of West Bromwich. The business thrived throughout the 1900s, and in 1972 the company was purchased by Staveley Industries Plc. In 2002, the management team at Salter Housewares Ltd, backed by Barclays Private Equity, bought the company out from the group, to concentrate on its consumer businesses. In 2004 was sold to the US-based HoMedics company, and in 2006, Salter Housewares USA and Taylor Precision Products Inc (also owned by HoMedics) merged.Salter Brand No. 46 Household Spring Balance Kitchen Scales made of green painted metal with a white large clock face dial marked in 1oz graduations and with a shallow metal bowl placed on the flat top connected to the mechanism. An adjustable screw tightened or loosened the spring to bring the pointer to zero, prior to adding the material to be weighed.. A common piece of kitchen equipment as most families used this type of scale when measuring goods for cooking or storing. HOUSEHOLD SCALE / NO. 46 / SALTER / TO WEIGH 28 LB / ( rope & arrow TM) BRITISH MADE Base rope & anchor S (trade mark) weights, measures, shops, scales. balances, grocery stores, early settlers, moorabbin, bentleigh, cheltenham, salter housewares pty ltd, west bromwich, england, salter george, salter richard, bilston england

Fox's model 24 began production in 1906.Typewriter, Fox Typewriter brand, black with gold and green fancy transfers on sides, maker's name across top. Four rows of keys with Capital shift, back spacer pre-set shift. Keys include letters fractions, numbers, symbols, plus red and black type. Spacer marked in imperial measure. Printer on machine "FOX TYPEWRITER CO, GRAND RAPIDS, MICH USA" and "THE FOX TYPEWRITER CO. NO. 24 GRAND RAPIDS, MICH. USA" Printer on machine "FOX TYPEWRITER CO, GRAND RAPIDS, MICH USA" and "THE FOX TYPEWRITER CO. NO. 24 GRAND RAPIDS, MICH. USA"flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, typewriter, office equipment, commerce, business, fos typewriter company, fox model 24 typewriter

The Norman Oliver collection. Norman Oliver was three times Mayor of Bendigo - 1950-51, 1964-65, 1970-71. Twenty pages of typed notes for his radio talk. Undated, but in a bundle with others dated 1950-51. Corrections in blue ink. Topics include: flooding in Bendigo, the Engineer's Report, the Aerodrome and land reclamation, decentralised industries, street trees, noxious trades, the Medical Officer's Report, weights and measures, garbage, and new engineering staff.bendigo, council, speech notes, norman joseph oliver , councillor norman oliver. mayor of bendigo. 3bo

Volt-Meter from'Plaza Theatre', Mitchell St. Bendigo. A tag attached has the numbers 1-4-78 and says ' This meter was ''.(illegible!)' The scale goes from 0 to 120volts. And was manufactured by 'Nalder Bros & Thompson Ltd London.. It also measures both DC and ~ 50 (50 cycles per sec alternating current) Case is circular and made of a dimpled metal. With a 'half moon' shaped display. Case is approx. 200mm in diameter and 60mm deep

Black and white photograph of a drawing of anaesthetic equipment, a flowmeter and an ether vaporiser. On the right is the ether vaporiser inside a glass cylinder, with a control tap on top of it. It is attached to a metal cylinder which houses the flowmeter which is measuring the Oxygen and Nitrous Oxide. There is a round Oxygen control and a Nitrous Oxide control attached underneath the metal cylinder, as well as an Oxygen Bypass and a Nitrous Oxide Bypass. The diagram has each part of the apparatus named with an arrow pointing to the parts.ether vaporiser, anaesthetic equipment, flowmeter, nitrous oxide, oxygen

Believed to be used by Chief Petty Officer Navy Police Craig Duff whilst on duty in Mogadishu Somalia United Nation light blue go fast cap with UN cloth badge sewn above the peak; blue plastic adjusting slide at the back; cloth covered metal button permanently fixed at the centre top of the cap; there is opening at the back measuring 60 x 50 mm, cap is made of five segments that are stitched together to made up the crown of the cap and there is a stitched pattern of six parallel lines. the band on the rim has a plastic backing The UN embroidered badge is sewn centrally on the front and has the words UNITED NATIONS NATIONS UNIES cap, united nations baseball cap, cap un blue

Ref See "FLEMING". 1. THIS COAT OF ARMS WAS ONE OF THE KINGDOM OF PRUSSIA'S. The sword and the mace pattern was used between about 1803 - 1898. (It was superseded by a sword and orb with a cross surmounted on the ord). This second pattern lasted til 1918 with the fall of the House of Hohenzouern). 2. CHR REISSER was a well known instrument maker in those days. 3. ULM is a town in Wurtemberg, Germany.This is a brass bugle. On top is a crest, it is set in a raised circle. It features an eagle wearing a crown - wings spread. One talon has a sword, the other talon has what appears to be a mace. The mouthpiece is secured with a short brass chain.Stamped at opening of the outside is "CHR REISSER" "ULM"ww1, bueles, germanic, bugle

The medical instrument is used for the treatment of Trichomonas Vaginitis. Insufflation has been a medical practice since the early nineteenth century, the earliest mention of it appearing in 1823. There are descriptions of its therapeutic and diagnostic purposes in connection with almost every cavity of the body. Despite being used widely across many Victorian health institutions, insufflation has not been regarded as a dangerous procedure.The object is significant because it is representative of medical treatments used to cure sexually transmitted diseases in Aradale Mental Hospital in the 1940's. Black leatherette covered wooden box with a metal latch on the front and 2 hinges at the rear. "Wyeth Vaginal insufflator for silver picrate" printed on inside of lid. Blue, painted wood, custom made interior. Contains: Four canisters of Silver Pictrate [Sealed] One canister of Silver Pictrate [attached to Insufflator] One canister of Silver Pictrate [Open but covered with a plastic top] One Vaginal Insufflator (Holmspray) Each bottle has a white paper label with blue banners at the top and bottom and blue text which reads in part reads "5 GMS Wyeth's compound silver picrate 1% powder" A receipt of sale dated 18 February 1944 is included in the box. Manufactured by John Wyeth & Bros Inc, Sydney, Australiamedical history, silver pictrate, trichomonas vaginitis, ararat mental hospital

Navigation charts are drawn by professional hydrographers and describe the geography of land and water, enabling a water based navigator on board vessels such as ships to safely negotiate between ports locally and around the world. They are drawn to a particular standard with common symbols noting landmarks. The charts are used in conjunction with other navigational instruments and tools to calculate the vessel’s exact location and a safe route to its destination.The set of charts and their chart are of significance as examples of equipment and documents used to navigate the oceans of the world, particularly to Australia. Migration to Australia is an important part of this country's history.British Admiralty Navigation Chart - Portsmouth to Canary Islands - printed on rectangular white paper. Published in London by the British Admiralty in 1928.warrnambool, shipwreck coast, flagstaff hill, flagstaff hill maritime museum, flagstaff hill maritime village, chart, map, navigate, navigation, location, vessel, 1928, british admiralty, hydrographer, geography, admiralty chart, portsmouth, canary islands

The navigational computer was a circular slide rule used for calculating height and air speed corrections when flying an aircraft. The front cover lifts to reveal a further calculator used to solve vector triangles and plot course alterations. The device was intended to be strapped to a pilot's leg. The instrument was made by White and Gillespie (Melbourne) Pty Ltd c 1940 for the RAAF and used during WW2.Black metal box with silver metal flap top cover affixed with rotating circular rule . Two adjustable belts are affixed to the base of black box. A small spiral bound note book is contained beneath the flap top. RAAF Computer Navigational system MK. III. D. Serial No WG 2833navigation, raaf, computer, aircraft, ww2, 1940