Accession No

3324

Brief Description

portable, pivoted coil, pointer AC Wattmeter, electrodynamometer type, range 0 to 3000 watts, current ranges 0 to 15 and 30 amperes, voltage ranges 0 to 50, 100, and 200 volts, by Evershed and Vignoles Ltd., English, 1934

Origin

England; London

Maker

Evershed and Vignoles Ltd.

Class

electrical

Earliest Date

1934

Latest Date

1934

Inscription Date

Material

metal; plastic (ebonite); glass (mirror); wood; hide (leather); paper.

Dimensions

length 270mm; breadth 235mm; height 150mm

Special Collection

Provenance

Transferred from Department of Engineering, University of Cambridge, Cambridge, England, 1986.

Inscription

on dial: “WATTS / No. 25449”
on plate mounted on top: “EVERSHED & VIGNOLES, LTD / LONDON”
on inside lid “DIAGRAM OF CONNECTIONS”

Description Notes

Metal top with glazed window showing white dial and mirror; non-linear, hand printed scale, 0 to 3000 divisions; four ebonite-covered voltage terminals above window; mounted and sealed in wooden box with hinged lid and leather carrying handle; three pairs of plated metal current terminals on right side of box; blue-printed ‘DIAGRAM OF CONNECTIONS’ glued inside lid, dated ‘28-2-34’

References

Events