Accession No

1323

Brief Description

electrometer, reflecting, by Elliott Brothers, English, 1880-1890 (c)

Origin

England; London

Maker

Elliott Brothers

Class

electrical

Earliest Date

1880

Latest Date

1890

Inscription Date

Material

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

Dimensions

height 365mm; breadth 270mm; depth 230mm

Special Collection

Provenance

Inscription

‘ELLIOTT BROS.
LONDON’ (on base)

Description Notes

Circular brass base; single plate quadrants, supported on glass posts; brass rod supporting suspension with insulated feed-through and terminal at top; suspended needle with aluminium vane; glass cup with silvered outer surface rests on base; brass connecting rods with terminals lead to two quadrants; wires connecting opposite quadrants connected to terminals on underside of quadrants; screw adjustment for positioning one quadrant; rotating switch with ebonite handle extends from under base; glass cover; brass shielding cage; glass Leyden jar capacitor between suspension post and frame.

Condition: poor ( suspension broken, brass tarnished); incomplete (mirror, glass cover missing).

References

Events