Accession No

2288

Brief Description

moving coil, pointer ammeter, Weston Elec. Inst. Co., 1900 (c)

Origin

Maker

Weston Electric Instrument Co. Ltd

Class

electrical

Earliest Date

1900

Latest Date

1900

Inscription Date

Material

metal (brass, other); plastic (ebonite); glass; hide (leather); paper; wood

Dimensions

box length 206mm; breadth 173mm; height 103mm

Special Collection

Provenance

Transferred from Cavendish Laboratory, University of Cambridge, 1976.

Inscription

‘WESTON’S
DIRECT-READING
AM-METER’ (on dial)
‘WESTON ELECTRICAL INSTRUMENT CO.
NEWARK, N.J., U.S.A.
PATENTED NOV. 6TH 1888
No. 9033’ (on brass plate below dial)

Description Notes

Reddish metal case on wooden base; two ebonite covered terminals, one marked ‘+’; glazed window showing mirror and white dial; hand-printed scale 0 to 1.5 divisions; circular window below dial showing pivoted coil; metal plate with list of patents on front edge of case. In wooden carrying case with leather handle; certificate on inside of sliding lid refers to a different instrument.
Similar to Wh: 2598.

Condition: fair (dial glass broken, label on ‘+’ terminal missing); complete.

References

Events