Accession No

4133

Brief Description

Lucas pendulum, by Cambridge Instrument Company Ltd., English, 1938

Origin

England; Cambridge

Maker

Cambridge Instrument Company Ltd.

Class

electrical; medical

Earliest Date

1938

Latest Date

1938

Inscription Date

Material

metal (cast iron, at least 1 white metal)

Dimensions

length 545mm; breadth 370mm; height 655mm; diameter of wheel 495mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘LUCAS PENDULUM
Cambridge Instrument Co. Ltd.,
London and Cambridge
C246117’ (front standard)

Description Notes

Black-painted cast iron triangular base supports two black-painted standards, one considerably taller than the other. The larger one supports a wheel on an axle which runs through to the smaller standard. Wheel with four spokes and a degree scale divided on white metal [3˚] - 0 - [153˚], numbered by 10˚, subdivided to 1˚, with vernier reading to 0.1˚. Electrical key set on right hand side of the wheel; second key set at base of wheel; clamp on base for holding wheel in place, with knurled brass clamping screw. Axle carries a black-painted cast iron bearing which supports a short cast iron pendulum, pointing upwards. The pendulum is free to move between two pawls on a short arc positioned in front of the top of the wheel.

Condition good; complete.

References

Events