Showing 81 items
matching compass instrument
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Queenscliffe Maritime Museum
Instrument - Compass, bosun, South Western Marine Factors Ltd
... -and-the-bellarine-peninsula Compass, bosun Instrument Compass, bosun in card ...Unused, part of collection donated by Chris WoodCompass, bosun in card box with stand in polystyrenecompass -
Queenscliffe Maritime Museum
Instrument - Compass, Dent & Co & Johnson Ltd
... -and-the-bellarine-peninsula Compass Instrument Ship's compass, brass ...Ship's compass from the lifeboat QueenscliffShip's compass, brass with oval viewing window, two side electric lights and top carrying handle Front: 4' Dent & Co & Johnson Ltd, Linwood. N.B. and Londoncompass, lifeboat, queenscliff -
B-24 Liberator Memorial Restoration Australia Inc
Astro Compass MKII, Air Ministry Compass made at Sperti, 1940-1950
Used by the Navigator in a B-24 Liberator bomberAir Ministry CompassAstronomical Compass used by the Navigator in B-24 Liberator aircraft. Complete in original wooden box.Compass marked - A.M. Astro compass MKII CA/1174 Box marked - Delicate instrument, to be handled with great care.astro compass mkii, a7 -
Moorabbin Air Museum
Manual (item) - Navigation Instruments Compasses -Remote reading, A.P 1275B Vol1 Sect.11 A/L 43 TO 50
... First Street Moorabbin melbourne Navigation Instruments ... -
Wannon Water
Clinometre / Abney Level, E. R. Watts & Son, Clinometre
Abney Level / Clinometer is an accurate surveying tool used to measure degrees, percent of grade and topographic elevation. Used for surveying pipe lines.Instrument which consists of a fixed sighting tube, a movable spirit level connected to a pointing arm which turns and pivots. Adjustment knob/screw on top turns to rotate the compass indicator and bubble level. Arched scale graduated 0 to 90 degrees in both directions. Clinometer is housed in a brown leather case with a long leather strap for carrying around the neck.Watts London / No 70131 / Made in England -
HMAS Cerberus Museum
Instrument - Binnacle with compass
... -peninsula Binnacle with compass Instrument Binnacle with iron ...Originally part of the HMAS 'Paluma' launched for QLD Marine Defence Force in 1884 before being transferred to the Commonwealth Naval Forces 1901. Gunnery training ship attached to Williamstown Depot.Binnacle with iron correcting spheres at each side (painted red, Port, and green, Starboard) and clinometer below compassCoach Spring Suspension 7710paluma, navigational instruments, magnetic compass, defence, shipping, gunboat, queensland -
Whittlesea Historical Society Inc.
Instrument - Lockwood's drawing set with parallel rules, 19th Century
Drawing set with parallel rules used by William Henry Lockwood. William Lockwood was born in 1832 in Glossop, Derbyshire and came to Victoria in 1853 on the 'Marco Polo'. He settled in Whittlesea with his wife Naomi in 1856. He was contracted to the Whittlesea Road Board and was the Engineer to the Shire for a period of 40 years. Some instruments have markings 'JL' on them which is presumed to be Joseph Lockwood, William Henry Lockwood's father. There are 10 items in the Lockwood Surveying and Drafting Instruments Collection.19th century surveying and drafting instruments used by William Henry Lockwood, Engineer of Whittlesea, Victoria, Australia.Lockwood's boxed drawing set, with brass hinged lid, inside of the box is divided into 10 compartments containing, parallel rules (ebony), compasses, protractor, ruler with inclination scales.william henry lockwood, drafting instrument, drawing set, surveying instrument, whittlesea road board, whittlesea, 1856 -
Whitehorse Historical Society Inc.
Instrument - Divider
A pair of metal compass divider with a knurled nut on threadtrades, mechanics, tools -
Whitehorse Historical Society Inc.
Instrument - Mathematical Instruments
Believed to be 70 years old.Flat grey box containing four set squares in the lid, one compass, one ruler, two pieces of cork (not numbered), two pencils (not numbered), and an eraser (not numbered).The School Set of Mathematical Instrumentsinstruments, measuring -
Dandenong/Cranbourne RSL Sub Branch
Instrument - Pace Stick
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. -
Whitehorse Historical Society Inc.
Instrument - Compass & Set Square, C 1950's
... Compass & Set Square Instrument Compass & Set Square ...Example of school equipment, c 1950'sExample of equipment used in the teaching of geometry.Example of school geometry equipment.C E H engraved on reverse of set square. Mathematic scales on face of set square.school equipment, geometry -
Nhill Aviation Heritage Centre
Functional object - Carry case for Astro Compass
Matching carry box for Astro Compass 98.1Wooden box painted blue grey, hinged lid with brass latches. Mounting brackets inside to stow Astro Compass. Canvass shoulder strap (broken)Delicate Instrument To Be Handled With Great Care, Astro Compass Mk.IIcarry box, storage box, box, astro compass, cramer -
Flagstaff Hill Maritime Museum and Village
Instrument - Hourglass
An hourglass or sandglass is an instrument for measuring a defined time and can be used perpetually by simply turning it over immediately the top bulb empties. The clear blown glass is shaped into two equal sized bulbs with a narrow passage in the centre and contains uniform sized sand or glass particles in the lower bulb. The width of the neck regulates the constant flow of the particles. The glass is held in a stand with top and bottom of equal shape and size. Hourglasses can measure an infinite variety of time by gauging the size of the particles, the shape and size of the bulbs and the size of the passage between the bulbs, thus measuring hours or minutes or even seconds. Generally an hourglass sits between discs of wood at the ends, which are joined by long wooden spindles between the ends and tightened by screw caps. The length of time can be adjusted by adding or removing sand particles. The use of the marine sandglass (or hourglass) has been recorded in the 14th century in European shipping. A one minute sandglass was used in conjunction with the ship’s log for ‘dead reckoning’, (see below) that is, for measuring the ship’s speed through the water. They were also used to regulate ringing the ship’s timetable; for example a 4 hour sandglass was used for the length of the sailors’ watch, and a half hour timer for taking of readings for the ship’s log; the ship’s bell would be rung every half hour. It was usually the role of the cabin boy to watch and turn the sandglasses over at the exact time of them emptying their upper chambers and to ring the ship’s bell. Hourglasses have been used historically for many hundreds of years. Some have been used for timing church sermons, in cooking, in industry and at sea. Even today they are used for measuring the cooking time of eggs and timing a player’s turn in games such as Boggle and Pictionary. The sandglasses at sea were gradually replaced in the late 1700’s to early 1800’s by the more accurate chronometers (marine clocks) when they became reliable instruments. DEAD RECKONING (or Deduced Reckoning) Dead reckoning is the term used to describe the method of calculating the ship’s position from its speed and direction, used in early maritime travel, mostly in European waters. Both the (1) speed and the (2) direction of travel were recorded on a Traverse Board at half-hourly intervals during a helmsman’s watch of 4 hours. The navigator would record the readings in his ship’s log, plot them on his navigational chart and give his updated course directions to the next helmsman on watch, along with the cleared Traverse Board. This was a very approximate, but none-the-less helpful, method of navigation. The wooden Traverse Board was a simple pegboard with a diagram of a compass with eight peg holes along the radius to each of the compass points, plus a grid with ascending half hours in the left column and increasing ship’s speed in knots in a row across the column headings, with a peg hole in each of the intersecting cells. A number of wooden pegs were attached to strings on the board. By placing one peg consecutively in the direction’s radius hole, starting from the centre, and the speed holes when the half hourly reading was taken, a picture of speed and direction for the whole 4 hour watch was created. (1) To measure the ship’s speed a one minute hourglass timer was usually used to measure the ship’s speed through the water and help to calculate its longitude. A rope, with knots at regular standard intervals and a weight such as a log at the end, would be thrown overboard at the stern of the ship. At the same time the hourglass would be turned over and a seaman would start counting the number of knots on the rope that passed freely through his hands as the ship travelled. When the timer ran out the counting would be stopped. A timer of one minute (one-sixtieth of an hour), knots spaced one-sixtieth of a nautical mile apart, and simple arithmetic easily gave the speed of the ship in nautical miles per hour ("knots"). This would be recorded every half hour. The speed could however be inaccurate to the travel being affected by ocean currents and wind. (2) To calculate the ship’s direction a compass sighting would be recorded each half hour.Marine hourglasses or sandglasses were used from around the 14th to 19th century during the time of sailing ships. This hourglass is representative of that era, which is during the time of the colonisation of Australia. Hourglass or sandglass; an instrument used to measure time. Two equal sized clear glass bulbs joined with a narrow passage between them, containing equal sized particles of sand grains in lower bulb. Glass sits in a brass collar at each end, in a frame comprising 3 decorative brass columns or posts, each attached top and bottom, using round screw-on feet, to round brass disks. Disks have Roman numerals for the numbers 1 - 12 pressed into their inner surfaces and hieroglyphics on the outer surfaces. Roman numerals on inner surface of disks " I II III IV V VI VII VIII IX X XI XII " Hieroglyphics impressed on outer surface of disksflagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, horology, hourglass, hour glass, sandglass, sand glass, timing instrument, dead reckoning, deduced reckoning, finding latitude at sea, sandglass with hieroglyphics and roman numerals, hourglass with hieroglyphics and roman numerals, brass hourglass -
National Vietnam Veterans Museum (NVVM)
Equipment - Equipment, Army, US Magnetic Compass
Compass with folding clip covercompass, survival -
Flagstaff Hill Maritime Museum and Village
Instrument - Sextant, Late 20th Century
In 1941, the scientific instrument manufacturing firms of Henry Hughes & Son Ltd, London, England, and Kelvin Bottomley & Baird Ltd, Glasgow, Scotland, came together to form Kelvin & Hughes Ltd. Kelvin Company History: The origins of the company lie in the highly successful and strictly informal relationship between William Thomson (1824-1907), Professor of Natural Philosophy at Glasgow University from 1846-1899 and James White, a Glasgow optical maker. James White (1824-1884) founded the firm of James White, an optical instrument maker in Glasgow in 1850 and was involved in supplying and mending apparatus for Thomson university laboratory and working with him on experimental constructions. White was declared bankrupt in August 1861 and released several months later. In 1870, White was largely responsible for equipping William Thomson laboratory in the new University premises at Gilmore hill. From 1876, he was producing accurate compasses for metal ships to Thomson design during this period and this became an important part of his business in the last years of his life. He was also involved in the production of sophisticated-sounding machinery that Thomson had designed to address problems encountered laying cables at sea, helping to make possible the first transatlantic cable connection. At the same time, he continued to make a whole range of more conventional instruments such as telescopes, microscopes and surveying equipment. White's association with Thomson continued until he died. After his death, his business continued under the same name, being administered by Matthew Edwards (until 1891 when he left to set up his own company. Thomson who became Sir William Thomson and then Baron Kelvin of Largs in 1892, continued to maintain his interest in the business after James White's death. In 1884 raising most of the capital needed to construct and equip new workshops in Cambridge Street, Glasgow. At these premises, the company continued to make the compass Thomson had designed during the 1870s and to supply it in some quantity, especially to the Admiralty. At the same time, the firm became increasingly involved in the design, production and sale of electrical apparatus. In 1899, Lord Kelvin resigned from his University chair and became, in 1900, a director in the newly formed limited liability company Kelvin & James White Ltd which had acquired the business of James White. At the same time Kelvin's nephew, James Thomson Bottomley (1845-1926), joined the firm. In 1904, a London branch office was opened which by 1915 had become known as Kelvin, White & Hutton Ltd. Kelvin & James White Ltd underwent a further change of name in 1913, becoming Kelvin Bottomley & Baird Ltd. Hughes Company History: Henry Hughes & Sons were founded in 1838 in London as a maker of chronographic and scientific instruments. The firm was incorporated as “Henry Hughes & Sons Ltd” in 1903. In 1923, the company produced its first recording echo sounder and in 1935 a controlling interest in the company was acquired by S Smith & Son Ltd resulting in the development and production of marine and aircraft instruments. Following the London office's destruction in the Blitz of 1941, a collaboration was entered into with Kelvin, Bottomley & Baird Ltd resulting in the establishing “Marine Instruments Ltd”. Following the formal amalgamation of Kelvin, Bottomley & Baird Ltd and Henry Hughes & Sons Ltd in 1947 to form Kelvin & Hughes Ltd. Marine Instruments Ltd then acted as regional agents in the UK for Kelvin & Hughes Ltd who were essentially now a part of Smith's Industries Ltd founded in 1944 and the successors of S. Smith & Son Ltd. Kelvin & Hughes Ltd went on to develop various marine radar and echo sounders supplying the Ministry of Transport, and later the Ministry of Defence. The firm was liquidated in 1966 but the name was continued as Kelvin Hughes, a division of the Smiths Group. In 2002, Kelvin Hughes continues to produce and develop marine instruments for commercial and military. G. Falconer Company History: G Falconer (Hong Kong Ltd) appear to have had a retail presence in Hong Kong since 1885, according to the company website, and currently have a shop in the Peninsula Hotel. G Falconer was the Hong Kong selling agent for several British companies. Ross Ltd of 111 New Bond St London was one and the other was Kelvins Nautical Instruments. Falconers were primarily watchmakers, jewellers and diamond merchants.They were also agents for Admiralty Charts, Ross binoculars and telescopes, and sold English Silverware and High Class English Jewellery. In 1928 the company was operating from the Union Building opposite the Hong Kong general post office. It is unclear if the item is an original Sextant made by Kelvin prior to his amalgamation with Henry Hughes & Sons in 1941 as Kelvin appears to have only made compasses up to this date. If the Sextant can be established that it was made by Kelvin then it is very significant and a rare item made for and distributed through their Hong Kong selling agents G Falconer Ltd. There are many Sextants advertised for sale stating "Kelvin & Hughes 1917 model sextant". These can be regarded as replicas as the company was not formed until 1941 and production of marine instruments was not fully under way until after the war in 1947. Further investigation needs to be undertaken to accurately determine the provenance of this item. As the writer currently has the impression that the subject object was possibly made by Kelvin and Hughes in the mid to late 20th century or is a replica made by an unknown maker in the late 1970s. Purchased as an exhibition of marine navigational instruments for the Flagstaff Hill museum. The Sextant is a brass apparatus with filters and telescope lens, and comes with a wooden felt lined storage box. It is a doubly reflecting navigation instrument that measures the angular distance between two visible objects. The primary use of a sextant is to measure the angle between an astronomical object and the horizon for the purposes of celestial navigation.G Falconer and Co. Hong Kong (retailers of nautical equipmentflagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, sextant, kelvin & hughes ltd, hong kong, navigational instrument, g falconer, mariner's quadrants -
Moorabbin Air Museum
Instrument (Item) - Compass Navigational Type P8 Reference G6A/0726. ( 2 Units), Compass Navigational Type P8 Reference G6A/0726
... Navigational Type P8 Reference G6A/0726. Instrument Compass ... -
Moorabbin Air Museum
Instrument (Item) - Compass Type P10 No.9543T Packed In Wooden Case
... In Wooden Case. Instrument Compass Type P10 No.9543T Packed ...AM Ref No.6A/0.745 -
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 -
Whitehorse Historical Society Inc.
Tool - Compass
... Used by donor's husband in early 1940s instruments ...Used by donor's husband in early 1940sSmall brass and steel compass for drawing circles/curves and measuring. Sharp steel point. School instrument, geometryinstruments, measuring, trades, drafting -
City of Greater Bendigo - Civic Collection
Instrument - Surveyors Cross
... with theodolite to take compass readings. Instrument Surveyors Cross N.H ...Sighting compass / surveyors compass used in conjunction with theodolite for accurate readings of angles between designated visible points in the horizontal and vertical planes.Brass surveyors cross with original box. Used in conjunction with theodolite to take compass readings. Architects' / N. H. SEWARD / Instrumentscity of greater bendigo surveying -
Bendigo Historical Society Inc.
Tool - PITTOCK COLLECTION : TWO DRAFTING INSTRUMENT SETS
Two drafting instrument sets: * smaller green boxed set with non-operating lock, noted R. Pittock on the face of the box; seven drafting components made of steel an bone; 165 mm L x 85 mm W x 20 mm D * red boxed drafting set, complete set, with A. G. Thornton maker's marking. British made, Limited Paragon Works, Practical manufacturers, King St West Manchester. Six component set, includes two compasses, also three drawing pins. Box 193 mm L x 85 mm W x 20 mm D. Items stored in Pittock coach builders box, reference 13000.