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String Carrier for a String Galvanometer and Case, by Cambridge Instrument Company, Cambridge, Probably 1920s

Inventory Number 53614

Acknowledgement: © History of Science Museum, University of Oxford, inv.53614

Item type
Object
Provenance
Transferred from the University Laboratory of Physiology, Oxford, in 2005, per Professor David Paterson.
Primary inscriptions
"[Cambridge Scientific Instrument Co. Ltd. trademark]" on underside of instrument.
Object type
Galvanometer
Dimensions
Height: 140mm Width: 257mm Depth: 98mm Weight: 1.45kg
Inventory No
53614
Accession Number
2013-27

Description

String carrier for an Einthoven-type string galvanometer, as used in physiological experiments; with vernier scale and large adjusting knob marked 'To Increase Sensitivity'. Instrument made of black metal with lacquered brass components. In partially baize-lined fitted mahogany case, with hinged lid and fragment of old paper label on top.

The instrument has the Cambridge Scientific Instrument Co. Ltd. trademark, consisting of an electrical bridge with a cam in the centre, printed on the underside. This trademark was suggested by Horace Darwin in February 1919 and was registered worldwide.

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