Integrated 1-1/4"-dia. vane. Timed mean value calculation, hold function and max. / min. values. Velocity range: 80–4000 fpm; 1 fpm resolution. Temperature range: 14°–122°F. ±0.9°F accuracy with 0.1°F resolution. Backlit display is easy to read. Includes certificate of conformance, protective cap for safe storage, wrist strap, belt clip and two AAA batteries.