An original Kerr-Grant Microbalance, modified by E.J.Hartung This balance was invented in the chemistry department by Bertram Dillon Steele, later first Professor of Chemistry at the University of Queensland 1910-1930, in collaboration with Professor Kerr Grant, Physics. The design was widely used by other chemists, including Masson's mentor, Professor Ramsay, working in London on newly discovered rare gases (especially Radon), and Professor Hartung in Melbourne, investigating the chemistry of the decomposition of silver salts in photographic processes. The principle of the microbalance was to measure the change in density of a gas by the shift in the balancing beam due to a change in pressure of the gas in the balance case. The quartz balancing beam was made by Bertram Steele who was particularly skilled in glassblowing. A quartz beam is the beam of the Aston microbalance based on the Steele/Grant instrument, and described by F.W. Aston, the inventor of the mass spectrometer. The bulb at one end of the beam contained a fixed amount of air, so that a change in the pressure of gas in the balance case changed the buoyancy of the beam, yielding a displacement in the beam which could be measured. By this means, differences in weight of about 10 nanogram could be measured, in amounts of up to 0.1 gram. Such differences are significant the increase in weight of a metal sample due to surface oxidation (Steele's interest) in the weight loss due to radioactive decay of Radium (Ramsay's work), and in the estimates of density change due to the isotopic distribution of Neon (Aston). Ernst Johannes Hartung was a chemist and astronomer. Educated at the University of Melbourne (BSc 1913, DSc 1919), he became lecturer in 1919, associate professor in 1924, and succeeded Rivett as chair of chemistry in 1928, remaining in this position until 1953. Hartung?s lecturing style surged with enthusiasm and he employed the use of screen projections to demonstrate chemical phenomena to large undergraduate classes. In 1935 he recorded Brownian movement in colloidal solutions on 35 mm cinefilm, which was later copied onto 16 mm film for the Eastman Kodak Co. World Science Library. This can be viewed in the Chemistry laboratory. He researched the photo decomposition of silver halides, and was awarded the David Syme Prize in 1926. He devoted time to the design and construction of a large, new chemistry building for the School of Chemistry (built 1938?1939). During World War II he was approached by Professor Thomas Laby, chairman of the Optical Munitions Panel, to chair the advisory committee on optical materials, to produce high quality optical glass in Australia. This was successful, with large-scale production achieved within ten months at a reasonable cost. Hartung served three terms as general President of the (Royal) Australian Chemical Institute, was an ex-officio councillor of the Council for Scientific and Industrial Research, and a Trustee of the Museum of Applied Science (now part of Museum Victoria).An original Kerr-Grant Microbalance, modified by E.J. Hartung.

A hinged wooden stick that is used in military situations. It is kept in the Comradeship Lounge as a link to the legatees' military background. A pace stick is a training instrument used to gauge the length of pace and measure distance and interval for military parades. Legacy has a strong link to the military, most early legatees would be familiar with the pace stick and its use.Wooden stick that is hinged, has metal tips and is used as a pace tool.comradeship, pace stick

Mrs G. I. McCabe invented the ruler around 1930 in Sydney NSW and founded several branches of the McCabe academy of Dressmaking based on its use in Australia and London.A light coloured 'McCabe Faultless System of Cutting', dressmaker's folding, wood and metal ruler, Australia, 1950 - 1970. One side has six proportions for cutting bodices, the back has measurements for cutting coat and blouse sleeves only, as well as 12 inches markings. Copyright patented details are stamped onto the back side in black, as well as all measurements. 'McCabe Faultless System of Cutting' as well as many detailed measurements for dressmaking. 'Copyright Patented No 6783 54637' is stamped on the back. 'Patented Com No 6783 N.Z No 54637' is tam[ed on the front top.dressmaking equipment, sewing equipment, measuring instrument, measuring rulers

This device was used to measure surface wind speed and direction. This anemometer was located on a concrete pad outside room 2.15 on a steel pole. The pole was considered unsafe and the anemometer was relocated to it's current position. When lowering the pole it fell over and was badly damaged. The Bureau of Meteorology donated it to the museum. It was then repaired and restored. The central pole on which it is mounted is galvanised iron pipe painted black. The anemometer, a portable device that manually measures wind speed, was a necessary instrument once common to all weather stations. The arms are attached to a vertical rod and as the wind blows, the cups rotate, making the rod spin. The stronger the wind blows, the faster the rod spins. The anemometer counts the number of rotations, or turns, which is used to calculate wind speed, surface wind and direction. They were designed to be durable to withstand the corrosive environment and strong winds expected at coastal sites such as those at Gabo Island. Anemometers existed in the nineteenth century and their design was improved by various experts including John Robinson in 1846, John Patterson in 1926, Brevoort and Joiner in 1935 and Derek Watson in 1991 who added wind direction measurement to its functions. This example was made for the Bureau of Meteorology by the Melbourne instrument company, Synchrotac, which became registered and incorporated on 26 July 1966. It is now displayed inside the building. A good example of its kind, the anemometer has first level contributory significance for its historic value and provenance to the lightstation.Anemometer and tripod stand. Three cupped brass discs on rotating arms fixed to turned brass cylinder shaped shaft. Beneath discs is a lead directional wind arrow attached to a rotating arm. A wooden three legged stand with central supporting pole of black painted hardwood and attached to a white painted marine ply circular base.Under wind cups: " SYNCHROTAC / MELB. / ser.no.70/372 / MADE IN AUSTRALIA." Above wind direction arrow: "C.OF.APT..../ SYNCHROTAC / MELB ? MADE IN AUSTRALIA / ser.no.70/372"

Used on Gabo Island to measure maximun gust over previous 3 hours or between weather observations. Information on the back of the device implies that it was battery powered and indicates that it was used in conjunction with a Synchrotac brand anemometer. Its particular function was to measure maximum wind speed over three hours between weather observations. Like the other weather recording instruments in the collection, it became redundant to the Bureau of Meteorology’s needs. It is a good example of its kind and has first level contributory significance for its historic value and provenance to the lightstation.Black metal box with grey metal front. Two chrome plated handles at front. Red plastic square, greenish coloured knob at front with inscriptions under them.On front,"MAXIMUM GUST REGISTER / KNOTS / READ" On back, "for use with a synchrotac anemometer / ANEMOMETER / RESET" On 2 black plastic discs at back, "BATTERY x 4 "

W & T Avery was listed as a Private Limited Company in 1891 and a Public Limited Company in 1894. Set of Avery measuring scales, with two round brass pans. Has cross bar and chains. Mounted on rectangular wooden base with pull out drawer with brass handles. balances, weighing instruments

Troy weight is a system of units of mass from an unknown origin. While the name Troi is believed to have come from Troyes in the north east of France the system used primarily in the precious metals industry and adopted in Australia originated in 15th century England. Troy weight units are the 'grain' and 'pennyweight' (24 grains), the troy ounce (20 pennyweights), and the troy pound (12 troy ounces). One troy ounce equals 31.1034768 grams. The troy ounce and grain were also part of the apothecaries' system and was long used in medicine, but has now been largely replaced by the metric system (milligrams). When the Weights and Measures Act was passed in Victoria in 1862 local inspectors were established throughout the colony to ensure accuracy particularly in the weighing of gold. By the 1870's each local council had a set of standards that were used to test the scales, weights and measures of local merchants and businesses. This set would have been de commissioned some time after 1947 and was offered back to the Borough of Eaglehawk in 1989. Hinged, lockable wooden box with brass handle, hinges, latches and lock. Remnant wax on front face of box above and below lock. Interior of box is lined with purple velvet which is worn in several places. Box houses nine troy weights ranging in size from 100oz Troy to 2oz Troy. 1oz Troy is missing. Accompanying set is a two page letter from Weights and Measures Branch of Consumer Affairs offering set back to the Borough of Eaglehawk in 1989. Troy Weights: Part a) 100oz Weight, 68 mm Diameter at base x 113 mm H b) 50 oz Weight, 53 mm D x 90 mm H c) 30 oz Weight, 45 mm D x 77 mm H d) 20 oz Weight, 39 mm D x 65 mm H e) 16 oz Weight, 37 mm D x 60 mm H f) 8 oz Weight, 30 mm D x 47 mm H g) 4 oz Weight, 24mm D x 36 mm H h) 2 oz Weight, 19mm D x 28 mm H i) 1oz missing Hinged Wooden Box: Part j)171 mm H x 300mm W x 196 mm D Typed two page letter: Part k) 295 mm H x 210 mm W x 1 mm Top Troy: Each Troy weight stamped with small symbol made up of the number 5, an image of a crown and the word STANDARD. Side Troy : Each Troy weight stamped with small symbol made up of the number 5, an image of a crown and the word STANDARD above a series of date stamps recording every time the weight was tested. Date stamps: 30.4.1866; 16.9.81, 30 12.86; 1.2.92; 10.5.97; 15.1.04; 10.2.09; 17.12.14; 20.4.20; 29.9.25; 23.1.31; 18.6.36; 14.7.41: 11.7.47 Exterior Top of Box: Remnant of paper pasted to wood. Faint printed text 'ON HIS MAJESTY'S SERVICE'.borough of eaglehawk, making a nation exhibition, city of greater bendigo commerce

The phosphoroscope was invented by Alexander Edmund Becquerel and used to measure the amount of time that a phosphorescent substance will glow after being irradiated by a brilliant source of light.The phosphoroscope consists of a round metal chamber with a pair of rotating discs inside, arranged so that no light can pass directly through the chamber. The discs have cut-out windows spaced equally at regular angular distances and are turned by the hand crank linked to a gear mechanism. The sample is placed in a specially designed holder into the small opening near the gearing, and it is exposed to the light source through the large rear condensing lens.Engraved on chamber: 'Phosphoroscope de E. Becquerel / J. Duboscq a Parisbecquerel phosphoroscope, phosphoroscope, optical instruments, phosphorescent, alexander edmund becquerel, jules duboscq, france

Bushfire behaviour is influenced by many factors including temperature, relative humidity (RH), forest type, fuel quantity and fuel dryness, topography and even slope. Wind has a dominant effect on the Rate of Spread (ROS), as well as fire size, shape and direction. Temperature and relative humidity have major impacts on fuel dryness and therefore upon the availability of fuel for combustion. A thermo-hygrograph measures and records both temperature and humidity. It produces a continuous record by drawing ink traces on a paper chart held in revolving cylinder. Humidity is measured by shortening or lengthening of specially treated human hair. Temperature is measured by means of a bi-metallic strip. This particular instrument is a seven day recorder. The instrument is driven by clockwork. Serial number 10186 which probably dates from about 1960. The chart indicates it was last used in March 1979.Used for bushfire research.Clockwork Thermo Hygro GraphCasella London 10186 Made in England Research Branch. Forests Commission Orbostbushfire, forests commission victoria (fcv), forest measurement

Bushfire behaviour is influenced by many factors including temperature, relative humidity (RH), forest type, fuel quantity and fuel dryness, topography and even slope. Wind has a dominant effect on the Rate of Spread (ROS), as well as fire size, shape and direction. Temperature and relative humidity have major impacts on fuel dryness and therefore upon the availability of fuel for combustion. The amount of fine fuel available can increase rapidly from nearly zero when fuel moisture content is more than 16% after rain or a heavy morning dew, to many tonnes per hectare as fuel dries out later in the day and the moisture content drops below 9%. This explosive escalation in the amount of available fuel can happen over a few hours on hot and windy days. A sling psychrometer is a simple device for determining air temperature and relative humidity. It contains two thermometers, one of which is covered with a wick saturated with ambient temperature liquid water. These two thermometers are called dry bulb and wet bulb. When the sling psychrometer is spun rapidly in the air, the evaporation of the water from the wick causes the wet bulb thermometer to read lower than the dry bulb thermometer. After the psychrometer has been spun long enough for the thermometers to reach equilibrium temperatures, the unit is stopped, and the two thermometers are quickly read. A psychrometric scale on the side of the instrument is then used to convert the dry bulb temperature TDB and the wet bulb temperature TWB into humidity information. The wet bulb temperature is approximately equal to the adiabatic saturation temperature. The thermometers fold back into the plastic handle when not in use. Used to measure temperature and relative humiditySling PsychrometerBACHARACH INSTRUMENTS - Pittsburg PAbushfire, forests commission victoria (fcv)