Accession No

4321

Brief Description

electrostatic voltmeter, Ayrton Mather type, by Cambridge Instrument Company Ltd., English, 1931

Origin

England; London

Maker

Cambridge Instrument Company Ltd.

Class

electrical

Earliest Date

1931

Latest Date

1931

Inscription Date

Material

metal (brass, other); glass; plastic (ebonite)

Dimensions

depth 180mm; breadth 183mm; height 188mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘CAMBRIDGE
INTRUMENT CO. LTD.
ENGLAND (with logo)
AYRTON MATHER
STATIC VOLTMETER
No. L-46872’ (on top)
‘VOLTS
A & M ESV. No. L 46872
CAMBRIDGE INSTRUMENT CO. LTD. ENGLAND (with logo)’ (on dial)

Description Notes

Black metal case with vertical, rectangular glazed window at front showing white dial and mirror; non-linear scale, 0 to 1 000 divisions; brass cover housing pivoted mechanism with zero adjustment on top; two brass and ebonite terminals, and clamping control on bottom of case; two supports on rear for wall mounting.

Condition: good; complete.

References

Events