The TMA10A is ideal for HVACR technicians measuring HeatVentilationAir conditioning Refrigeration wind flow and temperature in residential, commercial and industrial air conditioning systems It offers numerous functionsuse it to check air velocity FPM (Feet per minute), air volume (flow) CFM (Cubic feet per minute) plus the remote vane allows greater measurement location flexibility Switch between C and F Input the area of airflow measurement to gain accurate air velocity results Measure an air flow source for a continuous moving average for up to two hours Determine minimum, maximum and average readings from a single point air source.