HD350: Pitot Tube Anemometer + Differential Manometer Features: • Simultaneous display of Pressure, Air Velocity or Air Flow plus Temperature • ±0.7252psi range • 5 selectable units of pressure measurement • Max/Min/Avg recording and Relative time stamp • Data Hold and Auto power off functions • Large LCD display with backlighting • Zero function for offset correction or measurement • Store/Recall up to 99 readings in each mode • USB port includes software • Includes Windows® compatible software with cable,9V battery, pitot tube with two 33.5” (85cm) connection hoses, and hard carrying case