The VelociCalc® Air Velocity Meter 9535 is like having multiple meters for the price of just one. This meter simultaneously measures, and data log several ventilation parameters using a single probe with multiple sensors. Simple to operate. Accurate air velocity measurement 0 to 6,000 ft/min (0 to 30 m/s) range. Simultaneously measure temperature and velocity. Calculates volumetric flow and actual/standard velocity. Displays up to three measurements simultaneously Datalog 12,700+ samples and 100 test IDs. Articulated probe version available (9535-A)