Accession No

4249

Brief Description

resistance box, by Cambridge Scientific Instrument Company Ltd., English, 1907

Origin

England; Cambridge

Maker

Cambridge Scientific Instrument Company Ltd.

Class

electrical

Earliest Date

1907

Latest Date

1907

Inscription Date

Material

wood; plastic (ebonite); metal (brass)

Dimensions

length 304mm; breadth 130mm; height 220mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘CAMBRIDGE INSTRUMENT CO. LTD. ENGLAND No. 6856
MANGANIN
OHMS
TO CARRY 0.5 AMPS’ (on top)

Description Notes

Rectangular wooden box with ebonite top; ventilation holes in four sides of box; two brass terminals; brass blocks with fifteen plug receptors (including one marked ‘INF’); brass and ebonite plugs; fourteen coils wound on brass formers, suspended on underside of top plate; five smaller coils without formers.

Condition: good; incomplete (two plugs missing).

References

Events