Accession No

4326

Brief Description

bolometer, by Cambridge Instrument Company Ltd., English, 1937

Origin

England; Cambridge

Maker

Cambridge Instrument Company Ltd.

Class

electrical

Earliest Date

1937

Latest Date

1937

Inscription Date

Material

metal (platinum, other, brass, copper, mercury); plastic (ebonite); wood; glass

Dimensions

box length 221mm; breadth 126mm; height 171mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘CAMBRIDGE INSTRUMENT CO. LTD.
ENGLAND
C 232732 (with logo)’ (on one cover plate)
‘EXPOSE THIS SIDE’ (on other cover plate)

Description Notes

Black metal cylinder; circular cavities on either side, with metal cover plates, to hold platinum-resistance coils; pipes for inflow and outflow of water, and for mercury-in-glass thermometer; two pairs of ebonite covered brass terminals; socket with brass screw for support stand. Five yards of twisted, four strand insulated leads, with copper lugs. In wooden box with hinged lid.

Condition: good; incomplete (platinum resistors missing).

References

Events