A Crookes tube is an early experimental electrical discharge tube, invented by English physicist William Crookes and others around 1869-1875, in which cathode rays, streams of electrons, were discovered. Wilhelm Röntgen discovered X-rays using the Crookes tube in 1895. The term is also used for the first generation, cold cathode X-ray tubes, which evolved from the experimental Crookes tubes and were used until about 1920.(http://en.wikipedia.org/wiki/Crookes_tube)Glass vacuum tube with a metal maltese cross inside. The tube is on a timber stand.scientific instruments, crookes tube, science, maltese cross, scientific objects

An induction coil consists of two coils of insulated copper wire wound around a common iron core. One coil, called the primary winding, is made from relatively few (tens or hundreds) turns of coarse wire. The other coil, the secondary winding, typically consists of many (thousands) turns of fine wire. An electric current is passed through the primary, creating a magnetic field. Because of the common core, most of the primary's magnetic field couples with the secondary winding. The primary behaves as an inductor, storing energy in the associated magnetic field. When the primary current is suddenly interrupted, the magnetic field rapidly collapses. This causes a high voltage pulse to be developed across the secondary terminals through electromagnetic induction. Because of the large number of turns in the secondary coil, the secondary voltage pulse is typically many thousands of volts. This voltage is often sufficient to cause an electric spark, to jump across an air gap separating the secondary's output terminals. For this reason, induction coils were called spark coils. The size of induction coils was usually specified by the length of spark it could produce; an '8 inch' (20 cm) induction coil was one that could produce an 8 inch arc. (http://en.wikipedia.org/wiki/Induction_coil)A metal and plastic object on a timber stand. In an induction coil the distance between the plates is often used to measure the voltage of the spark since the air breaks down at 30 000 volts per centimetreballarat college of advanced education, scientific instrument, induction coil, scientific instruments, electricity

Probably used at the Ballarat School of Mines. It indicates the percentage of relative humidity .A circular dial with non-linear graduations and centre-pivot pointer. it is mounted in a brass case, with rear mounting flange. The markings on the Hygrometer at Very Dry, Dry, Normal, Moist. It has a crescent moon dial indicatorballarat school of mines, meteorology, weather, scientific instruments, scientific objects, hygrometer, relative humidity

This microscope is thought to be one of the earliest 'mineral microscopes' obtained by the Ballarat School of Mines. See reference in SMB Calendar 1896, p47, also Ballarat SChool of Mines Calendar 1908-9, p35 - "petrological microscope".Black-finished brass microscope and brass stage. Includes adjustment knobs, lens mounts,three objective lenses and two eyepiece lenses of same rating. The microscope is boxed in a timber storage case, hinged at the front with a brass handle on top. Model: London, Ser.no. 26791Engraved on rear of base frame "R. & J. BECK Ltd LONDON 26791"petrographic microscope, microscope, petrology, ballarat school of mines, school of mines ballarat, mineral microscope, laboratory, r. & j. beck ltd

Around 1900 the Ballarat School of Mines had an international reputation. it is thought that that this photograph was originally taken by the New South Wales Mines Department during a visit to Victoria. This photograph was reproduced in the Ballarat School of Mines Annual Report 1900 This image is now (2012) used as Founders' Room in the Ballarat School of Mines Administration Building. Black and white photograph on green mountboard. It shows three men in a Ballarat School of Mines laboratory surrounded by chemicals and scientific equipment.Written on lower mount "Analytical Lab. S.M.B. Mines Deptmining, ballarat school of mines, chemistry, laboratory, scientific objects, scientific instruments, analytical laboratory, administration building, a building, founders room

The author, Bennett H. Brough was an associate of theRoyal School of Mines, a member of the COuncil of the Institution of Mining Engineers, a fellow of the geological society and of the Institute of Chemistry, a member of the Mining Institute of Cornwall, and a former instructor of mine-surveying at the Royal School of MinesRed had covered book 372 pages - part of Griffin's Mining Series. Contents include general explanatinos of surveying, an historical sketch, mineral deposits, mining terms, measures of length, measurement distances, the chain, rods, steel bands, measuring wheel, Miner's Dial, Magnetic needle, Fixed needle, German Dial, theodolite, traversing underground. Surface-surveys. plotting the survey, calculation of area, leveling, Telescope, Setting out, Mine-Surveying Problems, Mine Plans, Photographic Surveying, examination Surveying. Illustrations include: Whitelaw's Dial (Fig 22), Theodolite of the American Type with Hoffman tripod head, (fig 37a)mining, surveying, miner's dial, chain, survey, theodolite, scientific instruments

Nobel Industries Limited was founded in 1870 by Swedish chemist and industrialist Alfred Nobel for the production of the new explosive dynamite in the United Kingdom. Ardeer, on the coast at Ayrshire, was chosen for the company's first factory. Between 1877 amd 1926 it was known as Nobel’s Explosives Company Limited. The business later diversified into the production of blasting gelatine, gelignite, ballistite, guncotton, and cordite. At its peak, the factory employed nearly 13,000 men and women. In 1926, the firm merged with Brunner, Mond & Company, the United Alkali Company, and the British Dyestuffs Corporation, creating a new group, Imperial Chemical Industries, then one of Britain's largest firms. Nobel Industries continued as the ICI Nobel division of the company. Small black timber box with small screw holding back on, and leather handle on top. A pivoted needle remains vertical as box angle changes. Graded scale behing top end of needle. Two adjusting points at top.No 10070nobel, ballarat school of mines, scientific instruments, galvanometer

The Ballarat School of Mines was the first site of Technical Education in Australia. Initially it opened in 1870 and educated miners. Black and white photograph of the interior of the Ballarat School of Mines Physics Laboratory. Numerous pieces of equipment sit on benches. The image in the 1908 Ballarat School of Mines Calendar was title 'Physics Demonstration Room'.ballarat school of mines, laboratory, physics, scientific instruments, science, classroom, education

The Weston cell, is a wet-chemical cell that produces a highly stable voltage suitable as a laboratory standard for calibration of voltmeters. Invented by Edward Weston in 1893, it was adopted as the International Standard for EMF between 1911 and 1990.[1] This is a type of standard cell, which is a battery that produces a precisely known voltage in laboratory conditions at 20 degrees centigrade.[2]Brass cylinder with 4 connections at top. Two marked 'A' and the other two marked 'B'. Black plastic nob in the centre top. Written at top Weston Normal Cell I-0183 INT VOLTS AT 20 degrees CWeston Normal Cell H Tinsley & Co, London S E No 50498 No 8910weston cell, wet-chemical cell, stable voltage, voltmeters, edward weston, scientific instrument

Grey metal rectangular box with 3 large dials down centre and 3 terminals at one end Dials show different levels - capacitiesMaker's plate: Techtron - Techtron Appliances - Melbourne - Australia Type: R3D1 Serial: 101resistance control box, terminals, ohms dials, techtron appliances, scientific instruments

A self-contained demountable balance scale set mounted and housed in a timber box. Complete with balance weights - scales, balance, scientific instrument

Used in the Physics Department at the Ballarat College of Advanced Education.Desk-top electric calculator with 16 digit electronic display; 4 memories; operations controlled by keyboard. Type: Sharp Compet 363P; Serial No. 11110811Metalic adhevise strip label: "Ballarat C.A.E. PHYSICS"ballarat college of advanced education, physics, sharp, electronic calculator

William Spencer and Samuel Browning's were in partnership from 1778 to 1781. When Ebenezer Rust joined the partnership of Spencer and Browning in 1784, the firm of Spencer, Browning & Rust was created. All of the original partners of Spencer, Browning & Rust had died by 1819. The firm was succeeded by Spencer, Browning & Co. in 1840, following the 1838 death of Ebenezer Rust, Junior, son of the original partner. The successor company was in business until 1870.A monocular telescope in a tapered brass tube, with the middle two thirds coved with dark-brown leather. The eye piece end in telescopic, and is probably an add on. 83 cm long, 6.5 cm diameter at large end, 4.0 cm diameter at eyepiece end. Probably magnification is 1 7/8 inch. 48 mm focal depth of c79cm.telescope, scientific instrument, observatory, ballarat observatory, james oddie, ballarat boys' telescope company, spencer browning and co., astronomy

Ammeter in timber frame.ammeter, scientific instrument

Probably a Lab Printing Integrator Unit for Gas Chromatography. This item was used on the Mt Helen Campus of Federation University in S-Building. hewlett packard 3380a, computer, scientific instrument

This item was purchased by Geoff Biddington, and donated after his death. It is believed to have been used at the Woomera Rocket Range.Cylindrical timber spiral slide rule with timber box. 808 L.R.W. 36fuller calculator, calculator, scientific instrument, biddington, woomera, woomera rocket range, slide rule, scientific objects, scientific instruments

The box is cleverly designed to give quick access to the parts inside, having a lift-up lid and a pull-down front. The components within appear to be a portable radio, power supply or power converter with batteries and a charger. The attached leather strap makes the equipment easily portable. The portable power supply is significant for representing part of the evolutionary change in communications. The unit connects the use of power and radio for communication with the ability to save the power in power packs or batteries, or to convert the power from one form to another.Power supply, portable, electric; circuits can be Parallel or Series. Batteries (6) fitted into a square wooden box. Box has two catches to secure the lid and two catches to secure the drop-down front. Holes have been drilled around the edges of the lid and the top of the base. Inside the front panel are two copper coils, switches and connectors. Leather carry strap attached. Stamped into the vertical panel are "parallel", "P", "H", "SERIES", CAVERTY", "LIGHT" :WEAK", "CHARGING" Stamped into the vertical panel are "parallel", "P", "H", "SERIES", CAVERTY", "LIGHT" :WEAK", "CHARGING" flagstaff hill, flagstaff hill maritime museum and village, warrnambool, maritime museum, maritime village, great ocean road, portable power supply, power supply, battery box, battery, communication, radio, portable radio, battery powered radio, electronic instrument

This megaphone's conical shape amplifies the sound from the narrow end and would have been used to signal a warning or give instructions. Its design is similar to an earlier brass fog horn used on a marine vessel, as it has a wide brim that allows it to be free-standing, and a shoulder rope makes it portable and frees up the user's hands. The narrow end is shaped into a mouthpiece. The megaphone may have been used at sea foghorn on a vessel, although it has no reeds for the sound, or used by a leader of a band or a fireman or other similar uses. This megaphone's conical shape is based on the centuries-old ram's horn or horn from other animals, used to amplify sound to make it travel a long distance or be heard above other sounds. It represents a similar instrument made in the 19th century and used as a signal or to give instructions, such as on a vessel at sea, to a lifesaving team, or in a marching band. Megaphone; brass conical shape with an opening at both ends and a join near the wide end. The wide opening has a broad brim and is painted red inside. A brass ring is attached near each opening and a narrow rope is attached to each ring. warrnambool, flagstaff hill maritime museum and village, fog horn, marine equipment, navigation, warning signal, maritime, nautical, fireman, captain, shoulder rope, signal, safety equipment

This compass is the type used by an artillery unit of the Australian Military Forces during World War 2 and made by J W Handley. Although having owned the factory site since 1935 at 657 Victoria St J W Handley began to produce various items for the Australian Military forces after purchasing and expanding the factory to 655 Victoria St. It appears that he, or some one else may already have been occupying the site for industrial purposes, such as (Manufacturing, Foundry and Electroplating) since at least 1929. J W Handley Pty Ltd was actively producing items for the Military during the war years, a newspaper article from 1939 shows the factory in production and employing 420 people during 1939. J W Handley after the war moved into producing other non military items including a range of fishing reels. The company ceased trading in 1987 and was deregistered as J W Handley Pty Ltd in 1990.The item demonstrates the industrial capability of Australia at the start of World War 2, this item is actively sort by collectors of Australian Military memorabilia and represents a time in Australian history when the country was at war and the general population was concerned about an invasion from Japanese forces. It also therefor is of social significance as many Australians served in the Military forces at that time and the item is complete and in very good condition.A plane table compass, sometimes referred to as a trough compass, used by surveyors and artillery crew to accurately establish magnetic north. The compass is precision machined of brass material with a long needle to ensure accuracy. The compass scale is marked with a centre zero (for magnetic north) and graduations indicating plus and minus five degrees. The compass is housed in a protective wooden case with a sliding lid. The lid has a brass slide which locks the compass needle during periods when the compass is not in use.J.W.H./V Mark 11 D�D. Made by J W Handley Richmond Melbourne, Victoria. Serial number 1333 on boxflagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, trough compass, navigation instrument, surveyor's instrument, j w handley, artillery, australian army, trough, plane compass, world war 2

Surgeons Finger Saw. Length 230mmflagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, surgeons finger saw, finger saw

Forceps, Tooth Extracting. Made C.Ash & Sons England.73 S, EP/27. L 145mm.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, forceps, tooth extracting, c.ash & sons

Forceps, Tooth Extracting - Upper Molar Right. Maker Smith & Sheppard. Stamped 17 on outside of handle,L 175mm.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, forceps, tooth extracting, upper molar right, smith & sheppard

Forceps, Tooth Extracting - Upper Wisd. L 170mm.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, forceps, tooth extracting, upper wisdom

Forceps, Tooth Extracting - Lower Molar. Stamped 21 on handle. Maker Smith & Sheppard. L 165mm.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, forceps, tooth extracting, lower molar, smith & sheppard

Forceps, Tooth Extracting - Maker Smith & Sheppard, stamped 40, L 145mmflagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, forceps, tooth extracting

Forceps, Tooth Extracting - Upper Bicuspid. Made by Smith & Sheppard. L 165mmflagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village

Forceps, Tooth Extracting - Lower Stumps. Maker Smith & Sheppard. Stamped 31 on handle. flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, forceps, tooth extracting, lower stumps, smith & sheppard.

Mouth Retractor, has rubber pad on one arm. L 145mm.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, mouth retractor

Bone Chisel - medium, L 145mm, Made by Mayer & Moltzer Londonflagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, bone chisel, mayer & moltzer

Forceps, Made by Mayer & Moltzer London. "HAS" scratched on handle.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, forceps, mayer & moltzer