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1958 - Valve Triode D.E.H. 610 Osram, England (circa 1930) Triode valve, used in domestic radio receivers. |
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unknown, Australia Thermocouple used to drive a d'Arsonval meter. A thermocouple can be used from DC to radio frequencies and provide a reasonably accurate indication of the current flowing thru the thermocouple, having both a low resistance and small thermal mass. |
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Philips, Other (after 1922) Used in domestic radio receivers and amateur radio. Note the bifurcated pins, which were used initially in Europe during and after the Great War, before the sprung pins became common. |
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1961 - Valve, Triode, D.E.2.H.F. Osram, England Triode valve used in domestic radio receivers. |
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Mullard, England Used in domestic radio receivers and amateur radio. |
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1963 - Valve, Triode, D.E.8.H.F. Osram, England Used in domestic radios and amateur radio. |
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1964 - Valve, Triode, D.E.8.L.F. Osram, England Used in domestic radios and amateur radio. |
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AMPLION, Australia The veneered plywood case encloses a synchonous motor clock with die-cast plates. The dial has arabic numerals and a sweep seconds hand (replacement). 200 - 250 V, 50 cycles, 2 watt consumption. |
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Universe, Australia Bakelite case synchronous clock. The arbors run in holes in the bakelite housing. Non-self-starting motor. |
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Osram, England Used in domestic radios and amateur radio. |
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Westclox Australia Proprietry Limited, Australia Pressed metal case, die-cast plates. There was a Westclox factory in Melbourne. |
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1969 - Valve, triode, D.E.H. 210 Osram, England Used in domestic radios and amateur radio. |
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1970 - Valve, Triode D.E.2.L.F. Osram, England Used in domestic radios and amateur radio. |
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1952 - Demonstration Valve Triode/Heptode 6J8 AWA Radiotron, Australia (WW II) The 6J8 was a mixer/converter for use use to 30 MHz in domestic and military receivers. The glass envelope has been removed to allow the electrode structure to be seen. |
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unknown, England (WW II) Remote cutoff pentode, similar to 6U7G. Used as RF/IF amplifier in military receivers. |
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Mazda, England This high-slope pentode was used in war-time Radar receivers and VHF receivers in the IF strip. This valve had a filament voltage of 6.3 Volts. There was also a VR65 which used 5 Volts on the filament. |
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1977 - Valve Transmitting Triode 4220Z Standard Telephones and Cables, Australia This is a water-cooled valve used at Bald Hills radio transmitting station. It was capable of generating 10 kiloWatts output Class C, or could be used for an AF modulating amplifier. The filament is pure Tungsten, requiring 21.5 Volts at... |
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Ken - Rad, Usa (circa 1940) Full wave rectifier valve, for use in domestic receiver power supplies. |
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1957 - Valve, Triode PM256/ EA8148 Mullard, England Triode for use in radio receivers. |
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Miniwatt, England Low power audio frequency output pentode for domestic radio receivers. Similar to EL32. Note top cap connected to anode is missing. The P base was superseded by standard octal base. The P based valves were often ejected by the valve socket. |
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1974 - Valve, Triode PM6/ B288 Mullard, England Audio frequency output valve used by amateur radio operators and in domestic 'coffin' radio receivers. Glass envelope on bakelite 4 pin UX base. |
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Philips, Other Amplifier triode with 6.3V filament, used in domestic radio receivers. |
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unknown, Japan (circa 1929?) Amplifying triode popularly used in USA Coffin radio receivers. It has a low gain, typical of the period. This particular valve was made in Japan for the Japanese navy, but resembles accurately the US valve. |
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Osram, England This was the first commercial English Tetrode. It has a two-ended structure to keep down inter-electrode capacitance and consequent unwanted feedback between input and output circuits. The tetrode has a screen grid between control grid and anode.... |
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Mullard, England This is a tetrode valve. The screen grid is attached to the screw connection between base and envelope, as there only four pins on the base for filament, control grid and anode. The screen grid reduces the capacitance between control grid and anode... |
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unknown, England (WW II) Glass envelope on bakelite 4-pin base, spring pins, crucifix pattern. The function is not known, may be an electrometer valve. |
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1979 - Valve, Regulator, 13201E Philips, Usa (WW II) Glass envelope on bakelite 4-pin crucifix base with sprung pins. Concentric cylinders internally. |
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unknown, England (WW II) High vacuum half wave rectifier with filamentary cathode. |
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Osram, England (WW II) Shielded anode and cathode at opposite sides of a large enclosed cylinder |
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1982 - Valve, Duo-Diode VU 39A unknown, England (1940?) Full wave rectifier valve, similar to 5V4G. |
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Rogers Radio Tubes Ltd, Canada This is an experimental switch, resembling a Transmit-Receive (TR) switch used in Radar. |
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1989 - Transmitting Valve Water Jacket Unk, The anode of a water cooled transmitting valve was a copper thimble, which was inserted vertically into this water jacket. Water was circulated thru the jacket via the two steel pipes at the base of the jacket. |
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1990 - Heavy Duty Radio Battery type 'R' VESTA, Australia (circa 1930) A 2V lead-acid cell used both for 'coffin' radios and farm radios. Many are the stories told of the family's eldest son cycling into town to have the battery recharged by the local garage or radio serviceman. The hard rubber case was made by Dunlop... |
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1910 - Plaque "Thomas Parnell Memorial Library" Unknown, Australia This plaque was attached to the door of the Thomas Parnell Memorial library when it was in the Parnell Building, in the space now occupied by rooms 304 and 305. Parnell probably set up the original Physics library in the Domain, Gardens Point. The... |
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1989 - Transmitting Valve Water Jacket Unknown, This is a jacket in which the thimble of a water-cooled valve was inserted. Distilled water was circulated by a pump from a large tank of water at a higher level than the jacket. The water was regularly tested for conductivity and replaced when the... |
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- Box of Feed-Through Examples Unknown, One item is a glass cylinder with feed through wires sealed in a glass skirt. Other examples are feed throughs with wire through glass and metal skirts for mounting on holes in metal plates. |
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1993 - Demonstration Triode Valve AV25 AWV Radiotron, Australia This valve was used in apparatus that supplied relevant voltages to the electrodes. It demonstrates visually the action of the triode with varying electrode voltages. The unit has a filamentary cathode, flat open-wire control grid and flat anode... |
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2159 - Unipivot Galvanometer Type B Cambridge Instrument Co. Ltd, England, England (1928) The unipivot galvanometer was invented by Robert W. Paul in 1903. It is a classic of careful instrument design and continued in production for over 50 years. As in the more common form of moving coil galvanometer (D'Arsonval) a coil is... |
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Telequipment Division of Tektronix UK Ltd, England (1974) The D61 is a 10 MHz bandwidth all solid state dual trace oscilloscope. The vertical amplifier has a dual trace facility: it displays either channel separately, or alternates or chops back and forth rapidly between channels. Channel 2 can be... |
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1999 - AV43 Demonstration Cathode Ray Tube Amalgamated Wireless Valve, Australia (c. 1965?) This Australian-made educational CRT is mounted on a locally built power supply and was used in lecture demonstrations. The tube visualises how an electron beam can be deflected by the electric field between parallel plates. In fact a ribbon-shaped... |
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1994 - Mercury in Glass Thermometer 0 - 200C Unknown, Standard thermometer for lab work. |
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1995 - TI-83 Financial Calculator Texas Instruments, Usa Advanced Financial calculator to replace large and heavy mechanical calculators. |
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2004 - DATAMAN Electronic Calculator Texas Instruments, Other (1980) Educational toy calculator with mathematical games to aid in learning arithmetic. |
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- Manual & Disk TI-84 Maths Calculator Texas Instruments, Usa Manual for advanced Maths Calculator. |
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SYNCHRONOME BRISBANE, Australia (1960s) Smiths English Clocks AC synchronous motor clock mounted in Brisbane-made spun aluminium case, probably by the Australian Clocks division of the Synchronome Electrical Co. of Australasia. |
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2013 - Time switch (? incomplete) SYNCHRONOME BRISBANE, Australia Heavily modified #1 Synchronome dial movement missing some parts. |
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2008 - Enamel secondary dial wall clock Synchronome Electrical Co of Austalasia, Brisbane, Australia (before WW I) A reasonably weatherproof clock dial for the Synchronome system, probably dating from before WW I. it would have been assembled in Brisbane from imported parts, mainly from Germany. The baked enamel steel pan is enamelled brown all over and... |
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2010 - Synchronome secondary dial Synchronome Electrical Co of Australasia, Brisbane, Australia (c. 1957) A No2 secondary dial movement, serial number 55064, on a black painted aluminium dial pan, with art deco style hands. The hands are advanced by current impulses sent from a master clock every 30 s. An animation of the action can be found on the... |
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2009 - Pilot Dial and Timeswitch Synchronome Electrical Co of Australasia, Brisbane, Australia (c. 1958) A steel box houses a #2 secondary movement with an 8 cm diameter dial with arabic numerals and marked SYNCHRONOME and MADE IN ENGLAND. Inside the box, the movement, which has Fahnstock connectors and a carbon composition suppression ... |
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Arithma, Mechanical Calculator for doing addition and subtraction. Vertical scales are moved with a stylus, the top half set of scales are for addition, and the bottom half of scales are for subtraction. The result is shown in column totals between the 2... |
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Selective Education Equipment Inc, Usa Made in 1968 by the Selective Educational Equipment Corporation, this piece was used to teach students about early methods of calculation and mathematical tools. In some ways it resembles Blaise Pascal’s machine of 1645. The device has 4 turning... |
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1996 - Manual & Disk TI-84 Maths Calculator Texas Instruments, Usa These are for the TI-84 Maths calculator. They may be used for the TI-83 Financial calculator as there is only one key difference (MATRX/APPS key). |
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Villalcor S.L., Spain, Other Reproduction astrolabe based on an original of 1602 by Michael Asinus. An astrolabe is a plane representation of the celestial sphere that allows astronomical and astrological measurements and calculations to be made. The light alloy... |
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This mystery object is 10 cm long when closed up and was given to me by an antiques dealer who had a yellow cloth roll holding about 20 of them, apparently all identical. At one end is a roughly ground point, with a small flat at the end. At... |
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2018 - Fuller Cylindrical calculator W F Stanley & Co Ltd, England (1948) The Calculator is a slide rule with a cylindrical logarithmic scale 500 inches long (48ft 8ins), and an auxiliary drum surrounding it. The calculator is mounted on a rod which is inserted in a holder on the end of the calculator case. The case sits... |
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- Polyhedral Sundial (replica) unknown, Italy Purchased in Florence, Italy, in the 1980s this octohedral sundial represents a style very popular in the Renaissance when knowledge of the geometry necessary to lay out sundials was highly regarded. It is based on an original in the Galileo Museum... |
| A collection of various small holograms, including some made at UQ. | |
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Japan This is a traditional masu or measuring box, with a volume of one go (0.18 litre). It was purchased in a souvenir shop in Kanazawa in 2015. Originally used for measuring rice, such boxes are still used in ceremoniously serving sake in... |
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unknown, An old brass micrometer found in the Chemistry Workshop. Range 0-20 mm. |
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unknown, A well made bubble level with an adjustable cast iron base |
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Venner Electronics Ltd, Surrey, England |
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The Littlemore Scientific Engineering Co., Oxford, England |
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AWA, Australia |
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Unknown, |
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Muirhead & Co Ltd, England |
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146 - Gertsch Variable Ratio Transformer Ailtech LA California, Usa This auto-transformer has multiple taps, selectable by a 12 position rotary switch, to provide a variable output. The maximum input allowed is 350V AC or 0.35f, where f is in Hertz, whichever is the lower. It was used in a high sensitivity... |
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Unknown, Six tubes with pistons. Pistons 1.8 cms diameter, tubes 2.2 cms diameter |
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386 - Debye-Scherrer x-ray camera Siemens, Germany Thsi equipment was used for X-Ray spectrometry. |
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Leeds & Northrup, Usa The resistance box has arms A, B and R. Each arm has a series of resistors, selectable by inserting a plug in the relevant hole on the arm. Each arm has a range of 1.0 Ohms to 10kOhms. Arms A and B are adjacent, and tha ratio A/B can be varied... |
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IBM, Usa |
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2467 - Computer card Multi I/O National Computer Ltd, Usa |
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Taylors Elliots Pty Ltd, Laboratory Supplies Brisbane, |
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