Extech 407119-NIST with NIST Certificate

Accurately measures Air Flow (CFM/CMM) or Air velocity plus °F/°C Temperature Air velocity measurements as low as 40ft/min Telescoping probe is ideal for use in ducts andventilating systems, extends up to 3ft (940mm) long Measures air volume in CFM (ft3/min) and CMM(m3/min) plus Temperature simultaneously Air Flow displayed in 2 modes as an instantaneousvalue or up to 20 point average Record/Recall MIN and MAX readings Super large 1.4 (99,999 count) LCD display Data Hold plus Auto Power Off Built-in RS-232 PC interface with optional Data Acquisition software and cable > Each Unit Includes NIST Certificate Telescoping Probe with 5.5 ft. cable 4 Batteries