Accession No

4055

Brief Description

resistance box, by Cambridge Instrument Company Ltd., English, 1928

Origin

England; London

Maker

Cambridge Instrument Company Ltd.

Class

electrical

Earliest Date

1928

Latest Date

1928

Inscription Date

Material

wood; plastic (ebonite, ivorine); metal (brass); ceramic

Dimensions

length 106mm; breadth 107mm; height 105mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘EUREKA
No. L-27192
OHMS AT 20 C
CAMBRIDGE
INSTRUMENT CO. LTD. ENGLAND.’ (on top)

Description Notes

Rectangular wooden box with ebonite top; two brass terminals; 11-position rotary switch with ebonite knob and ivorine pointer (0 to 10 000 ohms); ten coils on ceramic bobbins arranged in circular frame of switch, fastened to underside of top plate.

Condition: good; complete.

References

Events