Accession No

2558

Brief Description

moving coil, reflecting galvanometer

Origin

19 Great Winchester St; London; England

Maker

Sullivan. H.W.

Class

electrical

Earliest Date

1900

Latest Date

1925

Inscription Date

Material

wood; metal; brass; glass; iron; ebonite

Dimensions

galvanometer height 330mm; breadth 302mm; depth 275mm each box length 263mm; breadth 105mm; height 46mm

Special Collection

Provenance

Donated by Imperial College, London, England, 1980.

Inscription

‘SULLIVAN’S GALVANR.
No. 430
PATENTED
H.W. SULLIVAN
19 GREAT WINCHESTER ST.
LONDON, E.C.’ (top of case)
‘1036’ (suspension unit)

Description Notes

Suspended coil, reflecting Galvanometer, Holder-D’Arsonval type.
Rectangular and turned wooden base; three brass levelling feet; two brass terminals on ebonite posts; cylindrical brass case with pivoted brass door in top and rectangular glazed window showing suspended circular mirror; coil on wooden former surrounding fixed iron core in gap of cylindrical magnet; central brass post supports suspension unit, which slides upward for removal. Two additional suspension units, each in a separate velvet lined wooden box; boxes marked ‘TESTING I’ and ‘TESTING II’; each box contains a typed label inside its lid

Condition fine (suspension intact; suspensions broken in additional units); incomplete (one levelling foot missing; mirrors missing in additional units).

References

Events