Description
The MH-3 Flowmeter is calibrated for use with the Oxymizer™ cannula for flight up to 18,000 ft.
The MH-4 has two altitude flow scales. The left (compressed) scale is calibrated for the Oxymizer™ cannula and is limited to flight of 18,000 ft.and below. The right scale is calibrated for a standard cannula or facemask up to 25,000 ft.
