Category: Sphygmomanometer
Estimated Date: 1915
Name: Brown Sphygmomanometer
Manufacturer: H. Carstens Mfg.
Description: Paper covered box 11×4×2. U-tube manometer with bulbous reservoir at top of end connecting to cuff and pump. Adjustable scale calibrated to 220 mmHg. The manometer is contained in the bottom of the box.
Reference 1: 263