Accession No

2599

Brief Description

moving coil, reflecting galvanometer, by H. Tinsley and Company Ltd., English, 1930 (c)

Origin

England; London

Maker

H. Tinsley and Company Ltd.

Class

electrical

Earliest Date

1925

Latest Date

1950

Inscription Date

Material

wood; ebonite; metal; copper; brass; iron; glass; plastic

Dimensions

height 280mm; breadth 230mm; depth 205mm

Special Collection

Provenance

Donated by Imperial College, London, England, 1980.

Inscription

‘GALVANOMETER
TYPE 4500 L
H. TINSLEY & Co. Ltd.
LONDON S.E. 25
No. 90,722’ (plastic plate on case)
‘31’ (inside frame, and plate above magnet)
‘MG103’ (added on front of case)

Description Notes

Triangular wooden base; three metal levelling feet; two copper terminals on ebonite plate; wooden frame supports magnet and vertical rectangular metal tube holding suspension system; magnet has adjustable magnetic ‘shunt’, controlled by plated brass knob and threaded rod, to vary magnetic field strength; hole in suspension tube shows circular mirror, and coil surrounding fixed iron core; ebonite zero adjustment knob on top. Wooden rectangular case with circular glazed window.
Condition good; complete.

References

Events