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Removable cylindrical brass casing with square glass viewing window at mirror level; mirror (now missing) suspended from 25 cm brass post over 4 brass quadrants supported by 4 amber posts on bakelite base; two electrodes on bottom of instrument joined through amber posts adjacent to other amber posts on a bakelite-like base; 2 additonal springs connect remaining quadrants; removable brass cylinder with flat square window at mirror level marked “38+” and “IIIE”; mounted on tripod with leveling screws
Accession Number: 2009.uc.13
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Primary Materials: brass, metal, bakelite, glass, amber
Markings:
H = 44.5 cm, Diameter: body – 13 cm, base – 16 cm; widtrh: foot to foot: 17 cm
Function: Precision electrical measurement
Condition:
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Manufacturer:
Date of Manufacture: c. 1880
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