TSI 9515 VelociCalc Air Velocity Meter Review
Today I will be going over the TSI 9515 VelociCalc Air Velocity Meter. 
This meter is an excellent entry level air velocity meter for the professional HVAC technician. The TSI 9515 separates itself from the plethora of air velocity meters in this price range by having a range of 0 to 4,000 ft/min (0 to 20 m/s) and an accuracy of 5%.