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‘sphygmograph’ historical pictures (exact matches)
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The Sphygmograph
Sphygmograph, London, England, 1900–1910
Dudgeon sphygmograph by Mayer and Meltzer, English
Dudgeon sphygmograph, Edinburgh, Scotland, c 1885–1900
The photographic method of recording the pulse wave, by Stein, from Marey's sphygmograph
A sphygmograph: an instrument (also known as a 'pulsometer') for recording graphically the features of the pulse and …
Dudgeon's Sphygmograph
Granville type sphygmograph, London, England, 1885–1900