Digital Hand Held Anemometer (Inclusive Battery) With Fast Accurate Readings, Digital Display And The Convenience Of A Remote Sensor Separately. Multi-Functions For Air Flow Measurement: M/S, Km/H, Ft Min, Knots. Low Friction Ball-Bearing Design With Accuracy At Both High And Low Velocities. Conventional Twis Ted Vane Arms, Data Hold. Compact Housing Cabinet. Used For Check The Air Velocity Of Sg/Lhb Type Ac Co Aches Air Conditioning & Heating Systems. The Supplier Shall Furnish Calibration Certificate And Warranty Cert Ificate During Supply Of The Material. [ Warranty Period: 30 Months After The Date Of Delivery ] ]