Accession No

2411

Brief Description

moving iron, pointer ammeter, by Ediswan, English, 1893

Origin

England

Maker

Ediswan

Class

electrical

Earliest Date

1893

Latest Date

1893

Inscription Date

1893

Material

metal; brass; silvered metal; steel; glass; paper

Dimensions

diameter 205mm; height 57mm

Special Collection

Provenance

Transferred from Department of Physical Chemistry, University of Cambridge, Cambridge, England, 1978.

Inscription

‘EDISWAN
PONDERS END
AMPERES
RD. NO. 184776’ (DIAL)

Description Notes

Moving iron, gravity-control, pointer Ammeter for vertical panel mounting; range 0 - 40 Amperes.
Cylindrical brass case with circular glazed window showing silvered plate with paper dial; non linear scale 0 - 40, numbered by 10; two brass terminal bars, with steel bolts, projecting from side of case, one marked ‘+’; printed paper note glued to back: ‘(INSTRUMENT No. 2666) In fixing up this Instrument the Positive lead is to be connected to the left hand Terminal looking at the front of the instrument, and the pointer should be set at 0, when no current is passing. June 13th 1893.’

condition good; complete

References

Events