Accession No

4290

Brief Description

temperature indicator / moving coil, pointer galvanometer, by Cambridge Instrument Company Ltd., English, 1943

Origin

England; Cambridge

Maker

Cambridge Instrument Company Ltd.

Class

electrical

Earliest Date

1943

Latest Date

1943

Inscription Date

Material

metal; glass; plastic (ebonite)

Dimensions

breadth 196mm; depth 190mm; height 119mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘BATCH PtPt/Rh, DEGREES CENTIGRADE RES. 194.9 OHMS
EXT. RES. 0.8 OHMS’ (on dial , above mirror)
‘CAMBRIDGE INSTRUMENT CO., LTD., LONDON AND CAMBRIDGE
BATCH 684 No C349702 RES. 718.1 OHMS
EXT. RES. 3.0 OHMS’ (on dial, below mirror)
‘BATCH
PT PT RHO
0-1200 C
BATCH 684
0-1200 C’ (on plate, above terminals)

Description Notes

In black metal case with carrying handle; three non-adjustable feet; glazed window in top showing pointer, white dial, and mirror; two scales, both 0 to 1200 degrees centigrade, each for use with a different thermocouple; single ebonite covered negative terminal.
Similar to Wh: 4289, but a later model.

Condition: fair; complete.

References

Events