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Electrical Telewriting Machine by Jules Richard, Paris, c. 1890Early French device, for recording
Electrical Telewriting Machine by Jules Richard, Paris, c. 1890Early French device, for recording meteorological data such as pressure, vacuum or ...
Group of 7 Historical Measuring Instruments1) Test Set Demolition MK.I, with Wheatstone bridge and
Group of 7 Historical Measuring Instruments1) Test Set Demolition MK.I, with Wheatstone bridge and galvanometer, c. 1940. - 2) Non-Reactive Rheost...
3 Cased Pocket Barometers1) J. Hicks, London, no. 7160, silver case, reverse with several hallmarks,
3 Cased Pocket Barometers1) J. Hicks, London, no. 7160, silver case, reverse with several hallmarks, dated 1908. - 2) Barometer, thermometer and c...
Group of Measuring Instruments1) Ohmmeter by Chauvin & Arnoux, Paris. In wooden case, c. 1910. -
Group of Measuring Instruments1) Ohmmeter by Chauvin & Arnoux, Paris. In wooden case, c. 1910. - 2) Mirror galvanometer by Hartmann & Braun, Frank...
Group of Electric Measuring Instruments1) Dutch mirror galvanometer by Kipp, Netherlands. - 2)
Group of Electric Measuring Instruments1) Dutch mirror galvanometer by Kipp, Netherlands. - 2) Milli-Voltmeter by Weston, USA. - 3) Amperemeter by...
Large Amperemeter, c. 1920Used in permea-electrotherapy, Eug. Rd. Müller, DRP, up to 100 ampere,
Large Amperemeter, c. 1920Used in permea-electrotherapy, Eug. Rd. Müller, DRP, up to 100 ampere, original lacquered brass, Ø 8 ¾ in., on brass bas...
3 Measuring Instruments1) Refractometer by Carl Zeiss in Jena, no. 1495, with flowing water temperature control, height 11 ¾ in., with case, c. 19...
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