Accession No

4374

Brief Description

Fery spiral radiation pyrometer, by Cambridge Scientific Instrument Company Ltd., English, 1910

Origin

England; Cambridge

Maker

Cambridge Scientific Instrument Company Ltd.

Class

electrical

Earliest Date

1910

Latest Date

1910

Inscription Date

Material

metal (aluminium, other); glass; plastic (ivorine); wood

Dimensions

box length 405mm; breadth 203mm; height 244mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘THE CAMBRIDGE SCIENTIFIC INSTRUMENT CO. LTD.
CAMBRIDGE ENGLAND
FERY
SPIRAL PYROMETER
U.K. PATENT No.
6890. 1907
No. 9582’ (on end plate)

Description Notes

Radiation pyrometer, Cambridge Scientific Instrument Company, 1910.

Cylindrical aluminium case, partly painted black; connected with ball and socket joint to metal tube for tripod mounting; large aperture for incoming radiation, with swinging circular cover plate; adjustable eyepiece with swinging red filter; knurled screw on side with scale on ivorine disk, 3.5 to 25 ft., for distance focusing; glazed window showing white dial and pointer; temperature scale, 0 to 2 000 degrees Fahrenheit; pointer and concave mirror visible inside cylinder. In rectangular wooden box with hinged lid. With Camb. Sc. Inst. Co. repair label, from ‘The Lea Bridge District Gas Co. Leyton’, dated 26-6-1916.

Condition: good (in working order, except for zero adjustment); complete (without tripod).

References

Events