Accession No

4227

Brief Description

apprentice's over-sized model of a Lindemann electrometer made for the Physical Society's annual competition for apprentices, by Cambridge Instrument Company apprentice, 1950-1970 (c)

Origin

England

Maker

Cambridge Instrument Company Ltd.

Class

electrical

Earliest Date

1950

Latest Date

1970

Inscription Date

Material

metal (brass, other); glass; plastic (ivorine)

Dimensions

length 480mm; depth 360mm; height 415mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘LINDEMANN
ELECTROMETER
C. I. Co. Ltd. (with logo)’ (on case)
‘CAMBRIDGE
INSTRUMENT CO. LTD.
LONDON & CAMBRIDGE’ (on ivorine plate on base)

Description Notes

Over-sized demonstration model of the Lindemann electrometer, by Cambridge Instrument Company, 1930-1950 (c).

Superficially similar to Wh: 2270 and 4000; brass cylindrical case with glaazed top and translucent bottom, mounted on black metal box; box contains illumination bulb, resistor, transformer, and electromagnet; sockets for 240 V.A.C. and for push-button control mounted on back of box.

Condition: fair; incomplete (wiring incomplete).

References

Events