Accession No

4319

Brief Description

temperature indicator 'Cambridge Regulator' / moving coil, pointer galvanometer, by Cambridge Instrument Company Ltd., English, 1935

Origin

England; London

Maker

Cambridge Instrument Company Ltd.

Class

electrical

Earliest Date

1935

Latest Date

1935

Inscription Date

Material

metal; plastic (ebonite); glass

Dimensions

depth 222mm; breadth 205mm; height 132mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘CAMBRIDGE INSTRUMENT CO., LTD., LONDON AND CAMBRIDGE. (with logo)
No. L 44655
BATCH Pt
Rh.
HUNDREDS OF DEGREES CENTIGRADE
EXT RES. 0.5 OHMS
RES. 167.4 ohms’ (on dial)
‘CAMBRIDGE REGULATOR’ (on front of case)

Description Notes

Black metal case; two lugs at back for wall mounting; seven terminals mounted on ebonite bar on bottom, including three pairs marked ‘RELAY’, ‘GALVO’, and ‘HEATER VOLTS’ respectively; clamping screw and fuse on bottom; zero adjustment screw on top of case; curved glazed window at front showing white dial with mirror; non-linear scale, 0 to 10 divisions; black galvanometer pointer; red pointer whose position is set by screw at top of case; rheostat in galvanometric circuit.

Condition: good; complete.

References

Events