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History of Science - Scientific Instruments and Historical Artifacts
(16 results)



Display: 50

    • Edison Tape Recorder Films

    • Edison Tape Recorder Films

    • McGraw-Edison Edisette Cassette Tape Recorder. 17 Watts, .21 Amps, 60 Hertz AC, 105-125 Volts. Serial Number C 52585
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    • McGraw-Edison
    • Gas Sampling Bottle Videos

    • Gas Sampling Bottle Videos

    • Thomas Scientific Gas Sampling Bottle. A respiratory gas aparatus that measures Carbon Dioxide and Oxygen in expired air
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    • Thomas Scientific
    • Gas Sampling Bottle Still Images

    • Gas Sampling Bottle Still Images

    • Thomas Scientific Gas Sampling Bottle. A respiratory gas aparatus that measures Carbon Dioxide and Oxygen in expired air
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    • Thomas Scientific
    • Milliammeter Videos

    • Milliammeter Videos

    • Weston (of Newark, NJ) Electrodynamometer Milliammeter model 370 No. 1519. Measures small electrical currents, milliamperes. Reliable within .25%. To obtain greatest accuracy on direct current, reversed readings should be taken to eliminate the...
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    • Weston Electrical Instrument, Co.
    • Milliammeter Still Images

    • Milliammeter Still Images

    • Weston (of Newark, NJ) Electrodynamometer Milliammeter model 370 No. 1519. Measures small electrical currents, milliamperes. Reliable within .25%. To obtain greatest accuracy on direct current, reversed readings should be taken to eliminate the...
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    • Weston Electrical Instrument, Co.
    • Refractometer Videos

    • Refractometer Videos

    • Bausch and Lomb abbe type refractometer measures the refractive index, how light passes through, of an item. It was also used to determine the concentrations of solutions. There is a thermometer missing, which that helped to keep the liquid at a...
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    • Bausch and Lomb, Rochester, NY
    • Refractometer Still Images

    • Refractometer Still Images

    • Bausch and Lomb abbe type refractometer measures the refractive index, how light passes through, an item. It was also used to determine the concentrations of solutions. There is a thermometer missing, which that helped to keep the liquid at a...
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    • Bausch and Lomb, Rochester, NY
    • Slide Box Videos

    • Slide Box Videos

    • A. S. Aloe Company of St. Louis, Missouri box to store 100 and label biological or chemical slides
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    • A. S. Aloe Company
    • Slide Box Still Images

    • Slide Box Still Images

    • A. S. Aloe Company of St. Louis, Missouri box to store 100 and label biological or chemical slides
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    • A. S. Aloe Company
    • Voltmeter Videos

    • Voltmeter Videos

    • Weston (of Newark, NJ) Electrodynamometer Voltmeter model 341 No. 2104. Measures the voltage of an electrical circuit. Reliable within .25%. To obtain greatest accuracy use the formulas on the authentication certificate. No correction for...
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    • Weston Electrical Instrument, Co.
    • Ancient Mesopotamian Cuneiform Tablet

    • Ancient Mesopotamian Cuneiform Tablet

    • Inscribed baked brick from the ziggurat at Al Untash Napirisha, modern Chogha Zanbil, in southwestern Iran (Khuzestan province). This site was also known as Dur Untash to the Assyrians. The text is a dedicatory inscription that begins: "I,...
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