A sphygmograph: an instrument (also known as a 'pulsometer') for recording graphically the features of the pulse and variations in blood pressure. Wood engraving, 1850/1880?.

Date:
[1850/1880?]
Reference:
568357i

Licence: Public Domain Mark

Credit: A sphygmograph: an instrument (also known as a 'pulsometer') for recording graphically the features of the pulse and variations in blood pressure. Wood engraving, 1850/1880?. Wellcome Collection. Source: Wellcome Collection.

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