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Siemens & Halske Universal Galvanometer, c. 1...
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Large Induction Coil According to Ruhmkorff, ...
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2 Large French Brass Measuring Instruments...
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2 Hartmann & Braun Precision Amperemeters...
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Large Ruhmkorff Induction Coil...
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Gas or Steam Engine Dynamo, c. 1910...
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3 Precision Galvanometers, 1900-1930...
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2 Compensation Devices, c. 1930...
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Astatic Galvanometer by Hirschmann, c. 1885...
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3 High-Power Light Bulbs, c. 1920...
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19 Alpha-Numerical Lightbulbs...
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Large Early Electric Light Bulb Assortment...
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Display Cabinet: "The Manufacturing of Philip...
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Bulb Manufacturing Showcase...
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Ediswan-Focus Prototype Projection Light Bulb...
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Group of Antique Switches and Power Sockets, ...
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Resistance Bridges and Wattmeter, c. 1910...
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Sullivan Universal Galvanometer, c. 1920...
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2 Early Electric Motors, c. 1900...
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Induction Coil after Ruhmkorff, c. 1910...
