Estimated Date: 1900
Name: Haemadynamometer, Sphygmometer
Description: 6.5“x2.5“x1.25” black box with blue velvet lining holds 2“d x 0.5” gilded circular gauge calibrated in mmHg from 0 to 250. The name Hawksley is written in ink on the handwritten gauge and the word Patent. Attached to the gauge is a 6” long metal loop with spring feet and extending from the bottom where the springs are is a 3/8” sensor on 0.5” rod which activates the needle to read the gauge. Also a ring.
Reference 1: 403