Vintage Puritan pressure-compensated flowmeter (Series B).

Puritan Pressure Compensated Flowmeter Series B W/ Quick Connect

Western Enterprises pressure-compensated O2 flowmeter

BPC 10 LPM Oxygen Flowmeter Max Flow 10 LPM Back-Pressure Compensated penox

Meco Series B 596,605 Pressure Compensated Flow Meter T-635

Bendix Scintilla Air FlowMeter 11-1757 Vintage 1940s WWII Untested

Precision Medical 8MFA Series Flowmeter **Untested**

Western Enterprises Pressure Compensated Flow Meter