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Modified Dudgeon sphygmograph, circa 1890

Modified Dudgeon sphygmograph, circa 1890

C017/6943

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Credit

SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY

Caption

Modification of Dudgeon sphygmograph with tambour dating from around 1890, England. This instrument is made of nickel and has a clockwork mechanism. The sphygmograph, originally invented in 1854 by German physiologist Karl von Vierordt, was used by physicians in the nineteenth century as a means of observing and measuring the pulse externally and non-invasively. A clockwork mechanism allows the pulse wave forms to be traced with a mounted pen.

Release details

Model release not required. Property release not required.

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