Accession No

4128

Brief Description

galvanometer, Einthoven string type, by Cambridge and Paul Instrument Company, English, 1921, fibre case made 1924

Origin

England; Cambridge

Maker

Cambridge and Paul Instrument Company Ltd.

Class

electrical

Earliest Date

1921

Latest Date

1924

Inscription Date

Material

metal (cast iron, brass, copper, steel, at least 1 other); plastic (ebonite, 1 other); glass; cloth; hide (leather)

Dimensions

length 530mm; depth 280mm; height 305mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘The Cambridge and Paul
Instrument Co. Ltd.,
England.’ (front)
‘No C 44441’ (on side of fibre case)

Description Notes

2 large leather-covered coils mounted around base of a U-shaped iron block, which acts as the core of the electromagnet, and is supported on three levelling feet. Set vertically between the poles (open ends of the U) of the magnet is the fibre case containing the fibre. The fibre can be viewed through a small glazed hole by means of a microscope set into one side of the electromagnet, the other side carrying a tube through which the fibre can be illuminated, by means of a 12V lantern (not present). Two pairs of brass terminals are connected to coils, and allows coils to be connected either in series or in parallel. Terminals on fibre case for connecting fibre to ECG electrodes.

Condition fair; complete.

References

Events