Fluke 975Vp Air Velocity Probe Accessory for Fluke 975 AirMeter allows one-touch air flow and velocity measurements to be performed while also extending the default reach of the Fluke 975 AirMeter. Velocity (FPM) 50 to 3000 Velocity (MPS) .025 to 15 Use with the 975 to measure air velocity from 50 to 3000 fpm Weight 0.85 ounces.