New Model 8904 Integral Vane Thermo-Anemometer simultaneously measures velocity and temperature. The large 1.3-inch display allows users to easily view readings. User-selectable wind speed units include ft/min, m/sec, knots, mph and km/hr. Model 8904 features include data hold, the ability to record minimum, maximum, and average readings on a single point, and an RS-232 interface setting. The unit can also record and average up to 2 hours of data while displaying the continuous running average. Model 8904 includes hard carrying case, one 9V battery, and instruction manual. This compact meter is ideal for HVAC inspection, energy audits and balancing applications.