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French Surveying Level by Ernst, c. 1850...
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French Brass Theodolite by Laderrière, c. 189...
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3 Measuring Instruments...
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Large Amperemeter, c. 1920...
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Group of Electric Measuring Instruments...
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Group of Measuring Instruments...
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3 Cased Pocket Barometers...
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Group of 7 Historical Measuring Instruments...
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Electrical Telewriting Machine by Jules Richa...
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Mechanical Time Switch...
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Ozone Generator, c. 1920...
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Early Electric Meter, c. 1920...
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Large Group of Antique and Vintage Switches, ...
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Sliding Induction Coil based on Design by Du ...
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Large Induction Coil by Siemens & Halske, c. ...
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3 Small Electric Motors, c. 1910...
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Collection of Electric Table Bells, 1900-20...
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Miscellaneous WWII Equipment, c. 1943...
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Electric Switch and Distribution Panel, c. 19...
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Large Group of Early Light Bulbs, early 20th ...
