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Quadrant Electrometer

University College

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

Alternative Name:

Primary Materials: brass, metal, bakelite, glass, amber


Dimensions (cm):

H = 44.5 cm, Diameter: body – 13 cm, base – 16 cm; widtrh: foot to foot: 17 cm

Function: Precision electrical measurement


Associated Instruments:


Date of Manufacture: c. 1880


Additional Information and References:

Historical Notes: