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2 Large Measuring Instruments by Siemens & Ha...
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Static Charge Measuring Instrument...
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8 Electrotechnical Measuring Instruments...
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Early Electric Motor, c. 1890...
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8 Electric Motors, Generators and Transformer...
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Meyrowitz Portable Electric Motor, 1891...
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2 Early Carbon Filament Bulbs and Other Illum...
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Group of Electrotechnical and Mechanical Cons...
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3 Arm-Protractors...
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Surveying Equipment, 1928...
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Large English Theodolite by Stanley, c. 1890...
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Small German Surveying Level, c. 1880...
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4 Telescopes on Decorative Stands, 19th Centu...
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"Utzschneider und Fraunhofer" Brass Telescope...
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English Reflecting Telescope by Dollond, c. 1...
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Gregory-Style Reflecting Telescope, c. 1780...
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10 Books about ...
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"Analytische Dioptrik" by Georg Simon Klügel...
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2 Brass Telescopes...
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3 interesting Telescopes, c. 1840...
