Accession No

4315

Brief Description

Unipivot galvanometer, by Robert W. Paul, English, 1910-1920 (c)

Origin

England; London

Maker

Paul, Robert W.

Class

electrical

Earliest Date

1910

Latest Date

1920

Inscription Date

Material

metal (brass, iron, other); glass; paper

Dimensions

depth 172mm; breadth 181mm; height 96mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘Robt, W. Paul, LONDON. N.’ (on top)
‘UNIPIVOT GALVANOMETER No. P. 737
ROBT. W. PAUL. LONDON. PATENTED.
RES. 500 OHMS AT 20 C
MILLIVOLTS
CU 13.7’ (on dial)

Description Notes

Black metal case; two brass terminals on bottom; two brass lugs at back for wall mounting; removable circular plate on top with zero adjustment and clamping screws; curved glazed window at front showing white dial with mirror; non-linear scale, 0 to 120 (millivolts); circular pivoted coil surrounds spherical iron core. Paper label on back giving specifications; paper label on top: ‘Clamp Pointer before moving’.

Condition: good (pivot intact); complete.

References

Events