Granville type sphygmograph, London, England, 1885-1900
A sphygmograph records the rate, strength and variations of the pulse. It is strapped to the wrist. The pulse beat is transmitted to a lever which records it on smoked paper. The first efficient sphygmograph was invented by Étienne-Jules Marey (1830-1904) in 1860. This example was made in the late 1800s. It is of a type designed by Mortimer Granville (1833-1900). It was made by instrument maker Walters and Company in London.
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The throbbing of the arteries as blood flows through them. The pulse matches the rate at which the heart is beating.
An instrument used to measure the pulse. It records the strength and rate of a person's pulse. Records are recorded on graph paper.
Glossary: blood pressure
The pressure at which blood is pumped around the body, closely related to the heart rate.