Accession No

4073

Brief Description

univector lead switch, by Cambridge Instrument Company Ltd., 2/4 20th C

Origin

England

Maker

Cambridge Instrument Company Ltd.

Class

electrical; medical

Earliest Date

1925

Latest Date

1950

Inscription Date

Material

wood; metal (steel, 2 white metals, at least 2 other metals); plastic (bakelite, at least 3 others); cloth (felt)

Dimensions

length 300mm; breadth 210mm; height 145mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘CAMBRIDGE
INST. CO. LTD.
LONDON &
CAMBRIDGE’

Description Notes

Black-painted metal case topped with white plastic dial with bakelite knob. Knob switches between ‘S’, ‘V’, ‘aVr’, ‘aVl’ and ‘aVf’. Four white metal terminals labelled on dial ‘RA’, ‘LA’, ‘LL’ and ‘PC’. The whole is mounted on a wooden base with steel clamp for attachment to horizontal surface; underside of base covered with green felt. On the opposite side from the terminals runs a black-plastic-coated cable which consists of five insulated wires which terminate in probes. One further wire originating at instrument and ending in a steel connector.

Condition fair (some rusting)

References

Events