Accession No

4287

Brief Description

moving magnet, reflecting galvanometer (aka ‘Paschen galvanometer’), by Cambridge Scientific Instrument Company Ltd., English, 1914

Origin

England; Cambridge

Maker

Cambridge Scientific Instrument Company Ltd.

Class

electrical

Earliest Date

1914

Latest Date

1914

Inscription Date

Material

metal (brass); plastic (ebonite); glass

Dimensions

height 324mm; diameter of base 230mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘THE CAMBRIDGE
SCIENTIFIC INSTRUMENT CO. LTD.
CAMBRIDGE ENGLAND
No. 25515’ (on case, above window)

Description Notes

Moving magnet, reflecting galvanometer (aka ‘Paschen galvanometer’), by Cambridge Scientific Instrument Company, English, 1914.

Circular brass base with four pairs of brass terminals mounted on two curved ebonite plates (front and back, upper and lower coils); three brass levelling feet; stepped-diameter brass cylindrical cover; inner suspension tube of glass; front and back pairs of coils slide away/toward suspended magnet system, which consists of two groups of thirteen magnets, arranged alternatively on opposite sides of a glass rod; a mirror is fixed midway between the magnet groups.

Condition: fine; incomplete (suspended system missing).

References

Events