Accession No

3916

Brief Description

galvanometer scale, by H. W. Sullivan, English, 2/2 19th Century

Origin

England; London

Maker

H. W. Sullivan

Class

electrical

Earliest Date

1850

Latest Date

1900

Inscription Date

Material

metal (brass, oxidised brass, white metal); glass; plastic (celluloid)

Dimensions

length 530mm; depth 215mm; height 345mm

Special Collection

Provenance

Purchased, 1993.

Inscription

‘H. W. SULLIVAN, London. E.C.’ (scale)
‘H.W. SULLIVAN.
LONDON.’ (base)

Description Notes

Circular brass base on which is mounted a brass column whose height can be adjusted by a knurled screw and locked in place by a second screw. An oxidised brass plate set on top of the column supports a telescope tube and the scale, which can be adjusted laterally by a knurled brass screw. The scale is marked on a celluloid strip and divided 25 - 0 - 25, numbered by 1, subdivided to 0.1.

Condition fair; complete.

References

Events