Accession No

3830

Brief Description

moving magnet, pointer galvanometer, by Siemens and Harski, German, 1850-1900

Origin

Germany; Berlin

Maker

Siemens and Harski

Class

electrical

Earliest Date

1850

Latest Date

1900

Inscription Date

Material

wood; metal (brass, white metal, iron); plastic (ebonite); glass

Dimensions

height 238mm; diameter 150mm

Special Collection

Provenance

Purchased from Auction Team Köln, D-5000 Köln 50, W. Germany, 30/11/1991.

Inscription

‘SIEMENS & HALSKI
BERLIN
NO 1950’ (base)

Description Notes

Wooden base with ebonite tripod and three brass levelling screws. Two brass terminals on base. Galvanometer mounted on circular brass base. Two brass standards support horizontal white dial underneath glass with pointer and scale divided 0 - [180], numbered by 10, graduated to 1. Two coils against standards; pivoted axle supports two rectangular magnets within the two coils, and attachment to pointer above dial. Cylindrical glass cover with brass ring frame at top.

Condition good

References

Events