Accession No

4366

Brief Description

recorder, strip (thread), by Cambridge and Paul Instrument Company Ltd., English, 1923

Origin

England; Cambridge

Maker

Cambridge and Paul Instrument Company Ltd.

Class

electrical

Earliest Date

1923

Latest Date

1923

Inscription Date

Material

wood; glass; metal (iron); plastic (ivorine)

Dimensions

length 505mm; breadth 292mm; height 415mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘THE CAMBRIDGE AND PAUL INSTRUMENT CO. LTD. ENGLAND. C 32771’ (on front of base)
‘THE
CAMBRIDGE AND PAUL
INSTRUMENT CO. LTD.
LONDON & CAMBRIDGE.
C32771’ (on ivorine plate on door)

Description Notes

Rectangular wooden box with hinged, locking, glazed door and glazed window in top; one fixed foot and two levelling feet; cast-iron instrument frame removable from box; suspended coil D’Arsonval galvanometer at rear with long pointer extending to drum recorder at front; clamp and zero adjustments at top; upper of two clockworks depresses pointer on inked thread every minute (or half minute); the continuous inked thread is also moved along a system of pulleys periodically; lower clockwork rotates chart drum once per 25 hr. (or 2 hr. 5 min.); two channels; two threads; linear scales, 0 - 20 ‘PERCENTAGE CO2’; two terminals on base of frame for input potential; exchangeable resistance coil. With two clockwork keys and three spools of extra thread.
Similar to Wh: 4365.

Condition: good (both galvanometer suspensions intact, one thread off pulleys, lock out of door); complete.

References

Events