Category: Sphygmomanometer
Estimated Date: 1914
Name: Sphygmomanometer, Sanborn
Manufacturer: Waltham Watch

Description: 2.25” circular anaeroid scale, calibrated from 30 to 300 mmHg. Sanborn Blood Pressure on scale. There is no base and it has one tube to connect cuff and insufflater directly from the circular housing. There is a clip to attach to a cuff on the back.

Reference 1: 400