Accession No

4285

Brief Description

electrodynamic, pointer wattmeter, by Cambridge Instrument Company Ltd., English, 1935

Origin

England; London

Maker

Cambridge Instrument Company Ltd.

Class

electrical

Earliest Date

1935

Latest Date

1935

Inscription Date

Material

plastic (ebonite); metal (brass, aluminium); wood; hide (leather); paper; glass

Dimensions

length 345mm; breadth 267mm; height 135mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘CAMBRIDGE DYNAMOMETER
No L-67023
CAMBRIDGE
INSTRUMENT CO. LTD.
ENGLAND (with logo)’ (on dial)
‘CAMBRIDGE SCIENTIFIC
INSTRUMENTS LTD.
EQUIPT. No. 40-0051’ (on paper label on top (added))
‘PHYSICS LAB.’ (on aluminium plate inside lid (added))

Description Notes

Ebonite top; two pairs of brass and ebonite terminals, for fixed and moving coils; three-position reversing switch for moving coil; zero adjustment screw; glazed window showing pointer, white dial and mirror; scale 0 to 50 divisions on either side of centre; in wooden box with hinged lid and leather carrying strap.

Condition: good (leather strap broken); complete.

References

Events