Accession No

4276

Brief Description

electrometer, reflecting, by Cambridge Instrument Company Ltd., England, 1930-1940 (c)

Origin

England

Maker

Cambridge Instrument Company Ltd.

Class

electrical

Earliest Date

1930

Latest Date

1940

Inscription Date

Material

metal (brass); glass

Dimensions

height 216mm; base diameter 165mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

Description Notes

Circular brass base on brass-coloured ring stand; three brass levelling feet; single brass terminal attached to base; electrical lead connecting quadrants to measured potential contained within shielding tube underneath base; cylindrical brass case with lens in circular window; top suspension plate supported on three brass pillars; two controls with circular scales on top plate for adjusting height of suspension and of one earthed quadrant; the other earthed quadrant pivotted to expose suspended two-bladed vane, or ‘needle’; clamping device. No inscriptions.
Similar to Wh: 2282.

Condition: fair; incomplete (suspended system missing).

References

Events