Accession No

1336

Brief Description

moving magnet reflecting galvanometer, by Elliott Brothers, English, late 19th Century

Origin

England; London

Maker

Elliott Brothers

Class

electrical

Earliest Date

1875

Latest Date

1894

Inscription Date

Material

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

Dimensions

height 185mm; breadth 137mm; depth 140mm

Special Collection

Provenance

Transferred from the Cavendish Laboratory, University of Cambridge.

Inscription

‘ELLIOTT BROS LONDON’ (base)

Description Notes

Suspended magnet, reflecting Galvanometer, Lord Rayleigh type.

Rectangular ebonite base; three brass levelling feet; two bubble levels; eight brass terminals; four small vertical coils in brass holders, mounted on brass base-plate; brass standard supports suspension; suspended system includes light horizontal aluminium wire with short, curved bar magnets at either end; ends of magnets extend into centres of the four coils; mirror and small astatic magnet pair above aluminium wire; glass dome cover.

Listed in the Cavendish Numerical catalogue: ‘Elliott, magnet in coils model, designed by Lord Rayleigh’. Cavendish Laboratory number E32.

Condition good (suspension broken); incomplete (mirror missing)

References

Events