Vendor of Flowmate (Oval M-III) is OVAL.
A small-size positive displacement flowmeter with built-in pulse generator best suited for measuring ultra micro flow in the application for fuel battery for home use, fine ceramics burning process, experiment, additive process, etc. FLOWMATE (OVAL M-III) has such features as high accuracy: ±1.0%RD (Types 40, 41, 45), measurement is available from ultra-micro, as low as 1.5 mL/min (Type 38), low price and robust