Quain's stethometer, late 19th century.

Quain's stethometer, late 19th century.
4 0 c m
actual image size: 23cm x 32cm


This instrument was used to measure the expansion of the chest when breathing. Sir Richard Quain (1816-1898) devised the stethometer to measure the difference in mobility of each side of the chest, as an aid to diagnosis. Made by Delolme and supplied by Coxeter, London.

© Science Museum / Science & Society Picture Library

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