Accession No

4122

Brief Description

Lucas muscle trough, by Cambridge Instrument Company, English, 1935

Origin

England; Cambridge

Maker

Cambridge Instrument Company Ltd.

Class

physiology; laboratory apparatus

Earliest Date

1935

Latest Date

1935

Inscription Date

Material

metal (brass, platinum, white metal); plastic (ebonite, one other)

Dimensions

length 220mm; breadth 95mm; height 70mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘Cambridge Instrument Co. Ltd.,
England.’

Description Notes

Lucas muscle trough by the Cambridge Instrument Company, English, 1935.

Rectangular ebonite trough with screw hole in base; pair of brass terminals on one side. Two brass electrodes pass through a box mounted on one end of the trough; the electrodes carry binding screws at their outer ends, are coated in ebonite at their inner ends and terminate at the inner ends in platinum wires which hang down into the trough. A black-painted brass plate is mounted on one of the long sides of the instrument and slots are fitted in it to allow movement along the length of the trough, clamped in place by a knurled brass screw. This plate carries the recording arm, which consists of a horizontal axle across the trough, with a vertical arm passing down into the middle of the trough and a horizontal arm on the other end, to which the writing point is attached. The opposite end from the electrodes a circular hole allows the trough to be mounted on a clamp stand and to be secured in place with a brass screw.

Condition good; complete.

References

Events