Galvanometer, England, 1921

Made:
1921 in Cambridge
maker:
Cambridge Scientific Instrument Company Limited

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum

Galvanometer string, brass, in wooden case, made by Cambridge Instrument Co., English, 1921

A galvanometer measures small electric currents. It is sometimes used during physiological experiments studying muscle contractions. Electrodes placed upon the body pick up minute electrical impulses. These cause a string within the galvanometer to move. Movement is recorded photographically to make a tracing. The galvanometer is one of the earliest instruments used to detect and record electrical activity in the heart. It forms the basis of electrocardiograph machines.

Details

Category:
Clinical Diagnosis
Object Number:
1979-731/1
Materials:
brass, case, brass, case, felt, case, wood and glass
type:
galvanometer
taxonomy:
  • furnishing and equipment
  • measuring device - instrument
credit:
Royal Postgraduate Medical School