... 1,Compact Design 2,Display Air Velocity and Temperature and Windchill 3,Wind Speed Unit Selectable 4,Beaufort scale displa Air ... Flow Anemometer GM89021,Compact Design 2,Display Air Velocity and Temperature ... and Windchill 3,Wind Speed Unit Selectable 4,Beaufort scale display A. Functions: 1. Air Velocity & Temperature Measurement; ...