UMT Large Pitot Tube 295x14mm - For Large UAV and VTOL7075 Aluminum UAV Pitot Tube (Airspeed Tube) Look, they say it is not the size of your pitot tube that matters, it is the accuracy of your dynamic pressure data. But let's be honest: at a massive 295mm overall length, yours is going to be visibly larger than the other pilots' on the flightline, and we know that matters to you. Ego boosts aside, if you are flying medium or large composite wing UAVs, guessing true wind speed based on ground telemetry is