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Galvanometers, Amperemeters and Voltmeters, 1...
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Tellurium with Lunarium by Jan Felkl, Prague,...
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Nine Electric Measuring Instruments...
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Eight Precision Instruments, c. 1890-1910...
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Collection of Books about Scientific Instrume...
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Tellurium with Lunarium by Svanström & Ryland...
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Large Tangential Galvanometer, c. 1900...
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Two Electrophysical Devices, 1880 onwards...
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English Calibration Balance or Checkweigher, ...
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Nuremberg Gold Balance by Kolb, c. 1780...
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Micro Analysis Scale "F. Sartorius AG, Göppin...
