m/s : meter per second ft/min : feet per minute knots : nautical miles per hour Km/hr : Kilometers per hour mph : miles per hour Range of Area (CMM) : 0.01~9999 m 2 Range of Wind Flow (CMM) : 0.01~9999 x 100 (CFM) : 0.01~9999 ft 2 (CFM) : 0.01~9999 x 100