Accession No

4259

Brief Description

capacitor, variable, by Cambridge and Paul Instrument Company Ltd., English, 1920

Origin

England; London

Maker

Cambridge and Paul Instrument Company Ltd.

Class

electrical

Earliest Date

1920

Latest Date

1920

Inscription Date

Material

metal (aluminium, brass); glass; wood; plastic (ebonite, ivorine)

Dimensions

length 177mm; breadth 176mm; height 175mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘No. L-1600
THE CAMBRIDGE AND PAUL INSTRUMENT CO. LTD.
ENGLAND
(with logo)’ (on top plate)

Description Notes

Fixed set of semi-circular aluminium vanes, and a similar set of parallel movable vanes attached to a central spindle; surrounded by clear glass cylinder; bottom wooden plate and top ebonite plate separated by four ebonite pillars; knurled ebonite knob with brass pointer and ivorine circular-arc scale marked from 50 to 1000 micro-microfarads; two threaded brass terminals.

Condition: fair (glass cylinder cracked); complete.

References

Events