Accession No

1334

Brief Description

moving magnet, reflecting galvanometer, by Elliott Brothers, English, 1870-1880 (c)

Origin

England; London

Maker

Elliott Brothers

Class

electrical

Earliest Date

1870

Latest Date

1880

Inscription Date

Material

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

Dimensions

height 335mm; base diameter 280mm

Special Collection

Provenance

Transferred from the Cavendish Laboratory, University of Cambridge.

Inscription

‘Elliott Bros.
London
No. 137’ (on uper coil box)
‘E.1’ (on glass and on base (added))

Description Notes

Circular ebonite base; three brass levelling feet; four threaded brass terminals; circular bubble level; two brass columns supporting two pairs of vertical ebonite coil boxes; suspended magnets with mirror at the centre of the upper pair of coils, and magnets with aluminium vane at centre of the lower pair; cylindrical glass cover with brass top; adjustable vertical rod supporting controlling magnet; circular glazed window fitted to front of glass cover. With fragment of a paper note, handwritten and signed ‘G.F.C. Searle’.
Similar to Wh: 1328.

Condition: fair (suspension broken); incomplete (controlling magnet and vertical support rod and mirror missing).

References

Events