Hot Wire Anemometer with two miniature glass-bead thermistors provides greater precision at low air velocities. Telescope probe expands from 9.2 inches to 3 feet for hard-to-reach places. Eliminate friction errors caused by rotating vanes with this no-moving parts. Serial RS-232 output allows anemometer to be connected to a computer or data logger for monitoring results. Memory function recalls the highest and lowest readings. A data hold button freezes the display to capture readings. Unit is supplied complete with dual thermistors probe, 40-inch cable, carrying case, Traceable® Certificate, 6 AAA batteries, and serial computer output.