Category: Pulse
Estimated Date: 1870
Name: Sphygmograph, Marey
Manufacturer: Ch Verdin

Description: 9×4×2” black cloth covered case lined in purple velvet contains paper for smoking and a compartment with extra pens. 9” long, on one end the clock work mechanism sits with 2.25×1.25 box, drives a 5×1” metal plate which holds the smoked paper. The pen, hinged at the other end is 6” long and is driven by a plate with an ivory end which senses the pulse the hole is laced to the wrist with 2 plates.

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