Accession No

3186

Brief Description

moving coil, reflecting galvanometer, by H. Tinsley and Company, English, 1925-1950 (c)

Origin

England; London

Maker

H. Tinsley and Company

Class

electrical

Earliest Date

1925

Latest Date

1950

Inscription Date

Material

wood; plastic (bakelite); glass; metal; iron; paper; brass

Dimensions

length 265mm; height 178mm; breadth 160mm

Special Collection

Provenance

Purchased, 1983.

Inscription

‘GALVANOMETER
TYPE SS2.45001
No. 78,034
H. TINSLEY & CO.
LONDON S.E. 25’ (brass plate under window)
‘No. 121, 756’ (top of galvanometer mechanism)

Description Notes

Rectangular wooden box, hinged lid, painted black inside; rectangular window at one end with sliding, translucent glass dial with scale, 140mm long with 1mm divisions; two brass galvanometer terminals on ebonite plate under scale; two similar terminals at opposite end for lamp power; inside box: galvanometer at scale end, plane rectangular mirror at other end, lamp and lens between; galvanometer unit in rectangular metal case, with circular glazed window showing suspended circular mirror, and coil surrounding fixed iron core in gap of magnet; clamping screw and zero adjustment.
Toggle switch on box, marked ‘CARRY’ and ‘MAT’ (added) provides resistive damping for coil.

Condition good (suspension intact); complete

References

Events