Category: Pulse
Estimated Date: 1900
Name: Pulse Watch

Description: 2” diameter stop watch. Regular time, plus a second hand,which sweeps a scale calibrated so that after counting 20 pulsations it reads the pulse rate/min. Also has two smaller scales, one for seconds and one for minutes. Gun metal with porcelin face noted sphygmometer, patent, calculated for 20 pulsations. Serial #45903.

Reference 1: 37

Sphygmograph, Marey
Hourglass 15 second
Pulse Watch
Pulse Watch
Pulse Meter