Accession No

4291

Brief Description

vibration galvanometer, by Cambridge Instrument Company Ltd., England, 1935-1945 (c)

Origin

England

Maker

Cambridge Instrument Company Ltd.

Class

electrical

Earliest Date

1935

Latest Date

1945

Inscription Date

Material

metal (brass); plastic (ebonite); glass

Dimensions

height 340mm; base diameter 200mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

Description Notes

Heavy brass base; two brass terminals mounted on an ebonite plate; cylindrical brass housing; circular brass framed window with lens showing suspended mirror on small coil between the magnet poles; knurled brass knob on top of housing adjusts tension; ‘ADJUST TENSION’ on top of housing near control knob; horizontal shaft with knurled handle controls length of vibrating section of suspension and hence coarse frequency tuning; removable brass cylindrical cover of upper mechanism. No inscriptions.
Similar to Wh: 3311.

Condition: good (suspension intact); complete.

References

Events