Accession No

3238

Brief Description

recorder, strip (ammeter), by Evershed and Vignoles Ltd., English, 1900-1925 (c)

Origin

England; London

Maker

Evershed and Vignoles Ltd.

Class

electrical

Earliest Date

1900

Latest Date

1925

Inscription Date

Material

wood; metal; hide (leather); glass

Dimensions

height 550mm; breadth 215mm; depth 184mm

Special Collection

Provenance

Cambridge University Observatories

Inscription

‘RECORDING AMMETER
MURDAY SYSTEM
DIRECT CURRENT
No. 920710’ (on plate on door)
‘EVERSHED & VIGNOLES LTD
LONDON’ (on plate on door)

Description Notes

Upright rectangular wooden box on metal base; leather carrying handle; hinged and locking door with glazed window; two pairs of terminals on top, for current input, and recorder power; pivoted coil D’Arsonval galvanometer with three-piece upright horseshoe magnet in upper section of box; pointer extends vertically downwards to continuous chart recorder, electrically driven, in lower section; zero adjustment lever; adjustable electromagnetic damping; pointer clamp. With door key.
Similar to Wh: 3237.

Condition: good (coil pivot intact); incomplete (pen missing).

References

Events