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2150 - Magic Tee for X-Band Microwaves Elliott Brothers Ltd, England (1960s?) A passive component to join four waveguides in such a way that two inputs are each split equally between two outputs without interacting with each other. That is magic. X-Band microwaves havea frequency of around 10 GHz and a free-space... |
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2144 - Grating Mirror for CO2 Laser PTR?, England (1980s) Original blazed diffraction grating ruled on aluminium for use as a wavelength selective mirror in a wide aperture TEA CO2 laser. The retroreflected wavelength was selected by rotating the grating in the Littrow configuration. The grating is still... |
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2154 - Thermometer 30-230 Fahrenheit Wilson Nafis and Co Ltd, Brisbane, Australia Mercury thermometer for domestic or rural use. The glass part is likely a replacement. |
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2156 - Hydrometer with inbuilt Thermometer Negretti & Zambra, London, England Hydrometer with specific gravity range 1000 -1040. Callibrated at 60oF, correction can be made using the inbuilt mercury thermometer. |
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2151 - Mercury in glass Thermometers unknown, Two mercury in glass thermometers, -5 to 50C and 0 to 75C. |
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2152 - Mercury in Glass Thermostat 0-50C Frowi, Germany Long mercury thermometer has adjustable electrical contact closed by mercury column. This can switch a heater or cooler to maintain a constant temperature. |
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2155 - Beckmann Thermometer 0-100C with 1/500C precision Goldbrand, Germany A special form of mercury-in-glass thermometer able to measure tiny changes in temperature over a small range chosen between 0-100C. |
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unknown, A special mercury-in-glass thermometer with high precision(1/100o) in a small range that can be selected from a very wide range(-20 to 180o) Probably callibrated in Fahrenheit degrees. Marked 'FOREIGN', so probably made in Germany for the English... |
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Moore & Wright (Sheffield) Ltd, England, England Micrometer screw gauge with 1/100 mm resolution |
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unknown, |
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2153 - Folder of Drawings from Synchronome Synchronome Electrical Co. of Australasia, Brisbane, Australia Contains an assortment of letters and drawings thrown out when the company was sold in 1993. These include clocks and fire alarms at Customs House, Brisbane, National Bank of Australasia, Brisbane, Brisbane Bulk Inst., Bulimba, St Andrew's Church... |
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2158 - Optical Fibre Technology Samples J. Sandell, A collection of optical fibre technology samples used by Jack Sandell, Senior Lecturer at the University of Central Queensland. Key to photographs below: Item 1. 10 core NBN fibre cable used in 2015 . Note the fibres are free to move and there are... |
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2015 - Unipivot Galvanometer No.24A Cambridge Instrument Co. ltd., England (1940) 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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unknown, England Large mercury thermometer with extremely fine capillary. |
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2161 - Mercury Thermometer -10 to +110C unknown, Mercury in glass thermometer graduated -10C to +110C in 1C divisions. A flat glass scale is sealed inside a glass envelope that would allow the whole thermometer to float. |
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2162 - Mercury in Glass Thermometer 0-600F unknown, Other A mercury in glass thermometer caliabrated in Fahrenheit degrees 0-600oF in 2o intervals. |
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2163 - Mercury Thermometer 0-240 degrees Fahrenheit unknown, Mercury in glass thermometer calibrated in Fahrenheit degrees. Range 0-240oF in 1oF intervals. It has a turned wooden case. |
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2164 - Beckmann Thermometer -20 to +120C H. J. Elliott Ltd , England Beckmann pattern high resolution mercury in glass thermometer with a total range of -20C to +120C, with a selectable 6 degree range with a resolution of 1/100C. |
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unknown, |
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2169 - Mercury Thermometer -10 to 42C, 1/10C unknown, Mercury in glass thermometer |
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H. J. Elliott Ltd in Wales, Other Mercury in glass thermometer operating over the range -20 to +120C that can show a 6C range with 1/100 C resolution. |
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2167 - Beckmann Thermometer -20 to +20 unknown, Germany |
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2168 - Thermometer 0-110 C, 1/10C Townson & Mercer, Japan |
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2174 - Mercury Thermometer -4 to 50 C, 1/10 C G.H. Zeal, London, England |
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2171 - Mercury Thermometer -5 to 50 C, 1/100 C Griffin, England |
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2170 - Mercury Thermometer -40 to +40 C, 1/20 C A. Gallenkamp & Co. Ltd, England |
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unknown, Fused silica tube as used to stabilise the length of the resonator of a submm laser in the 1980s (leftover scrap). The narrow gain linewidth of such lasers, and the long wavelength, requires that the resonator length be adjusted accurately to an... |
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2175 - Mercury Thermometer -5 to 100C, 1/10 C unknown, |
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unknown, Mercury in glass thermometer specially made to be fitted into an instrument, probably a Wheatstone Bridge or other test instrument where the temperature dependence of the standard resistances need to be taken into account. It ranges around typical... |
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2176 - Mercury-in-glass Thermometer 49 to 105 C Griffin, London, England Mercury in glass themometer with a range from 49 to +105 C, with 1/10 C graduations. It is marked Griffin, London "Jena Normal' 16 III Glass 23027 No. 13 Jena Normal Glass was developed by Otto Schott especially for thermometers as it was found... |
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2177 - Thermometer -5 to 105 C Griffin & Tatlock, England Mercury in glass thermometer ranging from -5 to 105 C, graduated in 1/5 C. |
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2179 - Instrument Thermometer 10-30 C Cambridge Instrument Co. ltd., A spare thermometer for a Cambridge Instrument Co instrument like a Wheatstone Bridge or other instrument where the temperature dependence of the resistances inside needs to be accounted for. |
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2180 - 1934 Report Brisbane WS & Flood Prevention Bureau of Industry, Australia Report prepared for the Queensland Parliament on the Brisbane River, and options for water supply and flood mitigation. Contains several maps. |
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2181 - Graphic Displays of Geomagnetic Geometry General Electric Company, Usa (1963) Large format book of charts, mainly contour plots of constant geomagnetic field intensity and constant magnetic shell parameter. Used by ionospheric physics research group member W. (Bill) Dearden. |
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Western Electric, Usa (after 1913) |
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2183 - AC Ammeter 25-500 cycles Model 433 Weston Electrical Instrument Corp., Newark, N.J. U.S.A., Usa |
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C.F. PALMER (LONDON)LTD. EFFRA ROAD, LONDON S.W.2, England A four step pulley drives a drum with a spring loaded rider and two adjustable pins. |
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Victorian Meter Laboratory, Australia |
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2186 - 15W Audio Amplifier Module UA-151 Omega Electronics, Japan Spare amplifier module for FM PA systems in G77 and G88 (now 7-222 and 7-234) lecture theatres. With data sheet and box. |
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Ekco Electronics, England |
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Philips, Holland |
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G.E.C. (UK), England |
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2192 - Sharp Calculator EL-520-G Sharp Corporation, China |
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Invicta, China |
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Arthur Bailey Pty Ltd Japan, Japan |
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2188 - Science Fair OPTICAL LAB KIT 28-198 Science fair Electronics (Tandy), Usa |
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2194 - Solid State Memory Assembly Unk, |
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2196 - AWV Valve Replacement Slide Rule Amalgamated Wireless Valve Co Pty Ltd, Australia An aid for radio repair that helps find an equivalent replacement valve with the same function and pin configuration as a faulty one, allowing a simple swap with an AWV product. It covers 295 valves with 58 different pinout specifications. |
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2197 - Laser Spectrum Analysers and Power Slide Rule Coherent Components Group, Usa (1985) Advertising handout covering laser power meters and spectrum analysers made by one of the largest manufacturers of ion lasers and accessories. |
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2199 - Alpha No. 4028 Circular Slide Rule Concise Co. Ltd, Japan, Japan (circa 1970?) General purpose circular slide rule in plastic from Japan. |
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2195 - Kane MK-6B Dead Reckoning Computer Kane Aero Company, Usa (1960s) Used in aircraft navigation. 'Dead Reckoning' is the process of determining one's position by integrating velocity and direction over the journey. |
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2200 - Vernier Scale Demonstration Unit Physics Workshop (?), Australia This unit can be used to demonstrate two Vernier scales. The lower one is a simple Vernier giving a ten-fold division of the smallest scale division, while the upper one simulates a spectrometer scale divided to 0.5 degrees with a Vernier giving a... |
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2198 - Circular Slide Rule No. 4300 Concise Co. Ltd, Japan, Japan |
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Atomic Energy of Canada Ltd., Canada Used for calculations involving radioactive isotopes. Scales for Elapsed Time, half life, and remaining fraction of original activity. A list of isotopes with their half-lives is on the back. |
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2202 - Radiologische rechenschijf (Dose Calculator) Drs C.G.F. Ampt, K.K. Keimpema, Holland Plastic circular rule for radioactive decay calculations. Instructions (in Dutch) on the back. |
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Nuclear Instrument and Chemical Corporation, Usa (1958) This rule is used to deal with the probabalistic nature of measurements made with counting detectors like Geiger counters. For full instructions, see file below. |
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Santok, Japan A small plastic slide rule suitable for the pocket. Can be used to multiply, divide, find square and cube roots, reciprocals, proportions, sine, cosine, tangent, and base-10 logarithms. Use of the trigonometric scales requires inverting the slide... |
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2205 - Health Physics Slide Rule Victoreen Instrumentation Company, Cleveland, Ohio, Usa A cheaply made printed slide rule suitable for use by someone concerned with the health effects of ionising radiation, including the effects of shielding. Scales for Dose Constant, Activity, Half Lives, Dose Rate, Flux/cm2 Min. Number of Half... |
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2206 - Radiation Protection Calculator by Dr Buehl unknown, Germany (circa 1950) A simple slide rule with accompanying instructions for use in the case of nuclear war. The manual begins 'In any atomic weapon explosion, radioactive dust is produced, that initially is highly radioactive, but loses its activity over time. In... |
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unknown, Focal length 300mm |
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unknown, Focal length 150 mm. |
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2209 - Achromatic Prism Separate Type Shimadzu Seisakusho Ltd, Kyoto, Japan Two slim prisms to be placed together. With different refractive indices and dispersive powers they can be used to illustrate the principle behind the achromatic lens. |
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unknown, |
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2211 - Grating Mirror for CO2 Laser PTR?, England (c. 1980) A grating can be rotated to reflect one particular wavelength exactly back along the incident direction. In this 'Littrow' configuration, a sufficiently efficient grating can be used as a wavelegth-tunable mirror in a laser. This grating is directly... |
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unknown, An Edison 4V, 0.84 A incandescent bulb is mounted on a ball-and-socket joint on a retort stand clamp, Probably part of a photometry experiment. |
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TOR, (c. 1955) A small X20 telescope with a 30 mm doublet objective. The lenses are coated. |
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unknown, |
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The Precision Tool & Instrument Co Ltd, England A special eyepiece used with a microscope to measure specimens. The micrometer screw allows precise movement of crosshairs across the field. |
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unknown, Unused 3" x 1" microscope slides in a cardboard box. |
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Hilger &Watts, England A number of unused optical flats 16 x 14 mm, 7 mm thick. |
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2218 - Box of Optical Fibre Connection Tools various, 2218/1 CRIMPING TOOL Automatic Tool Co., Union, New Jersey ATCC NC. Used in attaching plugs to OF cables 2218/2 FIBRE OPTIC STRIPPER NO-NIK Used to strip buffer from optical fibre. Made by Clauss. With instruction sheet. 2218/3 OPTICAL FIBRE... |
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2219 - Electro-optic modulator Coherent Components Group, Usa Probably an electro-optic modulator that rotates the plane of polarisation of light when a voltage is applied. Very likely used as a Q-switch or mode-locker. It is attached to a liquid cooled heat sink. |
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Coherent Corporation, Usa A set of optics for a dye laser using the dye Styryl 9M which allow operation in the near IR range. |
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2221 - Optical Fibre Cleaver Cat. no. 92214 Thomas & Betts Fibre optic Connection Products, Raritan, NJ., (c. 1990?) Used to make a clean perpendicular cut at the end of an optical fibre. |
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