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Group of Precision Measuring Instruments...
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Tektronix Type 535 Cathode-Ray Oscilloscope, ...
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Voltaic Pile after Alessandro Volta...
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High-Voltage Apparatus after Tesla, c. 1980...
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Electro-Magnetic Motor with Rotating Geissler...
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Large Ruhmkorff Induction Coil, c. 1900...
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Induction Coil after Ruhmkorff, c. 1910...
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8 Early Electric Motors, c. 1915...
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5 Early Electric Motors, c. 1900...
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Electro-Magnetic Motor, c. 1915...
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Electro-Magnetic Motor and Geissler Tube, c. ...
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Electro-Magnetic Motor with Rotating Geissler...
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8 Toy Electric Motors, c. 1930...
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9 Small Electric Motors, 1910 onwards...
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6 Vintage Model Electric Motors, 1900 onwards...
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6 Vintage Model Electric Motors, 1900 onwards...
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Leitz Microscope and Box with Preparations...
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Ernemann Projection Microscope, c. 1910...
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English Brass Culpeper-Type Compound Monocula...
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Sighting Scope and Monocular Telescope...
