Estimated Date: 1935
Name: Sphymomanometer, Collens Sphygmooscillometer
Manufacturer: UMA Inc.
Description: 12×4 5/8×2.5 black metal container. Left half has two scales, one for blood pressure and the other an oscillometer. The right half has a compartment with BP cuff and bulb. Serial no. B9205. Below the button to open cuff compartment is another button to activate the oscillometer. The base is felt covered. Pat. Pend.