A good Galvanometer by Siemens & Halske, German, circa 1880,
No. 11692, with silvered top scale with zero pointer and adjustable arc pointer, double 700ohm coils flanking long horseshoe magnet and calibration spring, mercury scale for temperature margin, all of lacquered finish behind cylindrical glass in polished turned wood base, exposed brass terminals, on fine-adjustment tripod base, in original stained beech carriage case with handle and catch - the case 10.1/2in. (27cm) high
Sold for
£720
inc. premium
Category: Collectibles / Scientific Instruments
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Jon Baddeley
Bonhams
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United Kingdom
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0207 393 3872
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Scientific Instruments