Accession No

4364

Brief Description

Strip-recording galvanometer or thread recorder, single channel, one colour, by Cambridge Instrument Company Ltd., English, 1929

Origin

England; Cambridge

Maker

Cambridge Instrument Company Ltd.

Class

electrical

Earliest Date

1929

Latest Date

1929

Inscription Date

Material

wood; metal (brass, cast iron, white metal); glass; paper; plastic (ivorine)

Dimensions

width 371mm; height 383mm; depth 295mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘Cambridge
Instrument Co. Ltd.
london & cambridge.
C135956’ (ivorine plate on front door; same inscription on front of frame)

Description Notes

Rectangular wooden box with hinged locking glazed door and glazed window in top. On fixed foot and two levelling feet. Cast iron instrument frame removable from box; suspended coil D’Arsoval galvanometer at rear with long pointer extending to drum recorder at front; clamp and zero adjustments at top; upper of two clockworks depresses pointer on inked thread at regular intervals; the continuous inked thread is also moved along a system of pulleys periodically; lower clockwork rotates chart drum once every 24 hours. Hinged door on rear.

Condition fine; incomplete (several components, including galvanometer and thread, missing).

References

Events