Accession No

1326

Brief Description

electrometer, reflecting, by Elliott Brothers, English, 1870-1880 (c)

Origin

England; London

Maker

Elliott Brothers

Class

electrical

Earliest Date

1870

Latest Date

1880

Inscription Date

Material

metal (brass, aluminium); glass; ebonite

Dimensions

height 350mm; diameter 230mm

Special Collection

Provenance

Transferred from the Cavendish Laboratory, University of Cambridge.

Inscription

‘ELLIOTT BROS. LONDON’ (on base)
‘E 260’ (on base (added))

Description Notes

Circular brass base; three levelling feet; each hollow box quadrant supported on glass post; brass rod supporting suspension with terminal at top; suspended needle with light aluminium vane; glass cup rests on base; brass connecting rods; wires connecting opposite quadrants; screws connecting wires on top of quadrants; screw adjustment for positioning one quadrant; rotating switch with ebonite handle extends from under base; glass cover; brass shielding cage.
Similar to Wh: 1325, but an earlier model.

Condition: poor (suspension broken, brass tarnished); incomplete (mirror, glass cover, shielding cage, and ebonite handle for rotating switch missing).

References

Events