Accession No

4033

Brief Description

illuminated moving-scale indicator, measuring resistance, by Cambridge Instrument Company Ltd., English, 1963

Origin

England; Cambridge

Maker

Cambridge Instrument Company Ltd.

Class

electrical

Earliest Date

1963

Latest Date

1963

Inscription Date

Material

metal; glass; plastic

Dimensions

length 250mm; breadth 200mm; height 174mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘CAMBRIDGE
INSTRUMENT Co., LTD., SERIAL NO. C703690
MADE IN ENGLAND’ (plate at back)
‘BATCH
INTERNAL RES: OHMS
EXTERNAL RES: OHMS’ (side)

DJN 27-8-65

Description Notes

Illuminated moving-scale indicator for % CO2 measurement. the scale etc. is contained in a black-painted metal box. Scale screen is vertical and has a central fixed datumline. Below the scale is a zero adjustment. On left side of case is a metal plate used for inscribing the specifications of the instrument. At the back is a black cylindrical movable bulb holder with an aperture so the light can pass to the lens (cracked) set in the back wall of the case. Below the lens are two terminals (minus screws) labelled + and -. There is also a white plastic wire holder screwed in position on the back wall. There is tape wound round rear of case and marked ‘DJN 27-8-65 L.81’. Loose flex approx 200mm long.

References

Events