Accession No

2403

Brief Description

Broca galvanometer, moving magnet, reflecting galvanometer, by Cambridge Scientific Instrument Company Ltd., English, 1910

Origin

England; Cambridge

Maker

Cambridge Scientific Instrument Company Ltd.

Class

electrical

Earliest Date

1910

Latest Date

1910

Inscription Date

Material

metal (brass); plastic (ebonite); glass; stone (quartz)

Dimensions

height 250mm; base diameter 175mm replacement part: diameter 56mm; thickness 24mm

Special Collection

Provenance

Transferred from Department of Physical Chemistry, University of Cambridge, Cambridge, England, 1978.

Inscription

‘..No. 9651’ (below window)
‘G
15’ (above coils (added)0

Description Notes

Circular brass base; three levelling feet, brass with ebonite toes; two brass terminals; two bubble levels; controlling bar magnet on brass rod with swivel connection to base; vertical brass plate with circular glazed window showing suspended mirror and damping vane; pair of vertical coaxial coils in removable ebonite boxes; two parallel vertical magnets suspended on a quartz fibre between coils.
Similar to Wh: 1613.

Complete (with extra ebonite coil box).

References

Events