a device combining a Pitot tube with a static tube: used to measure airspeed.
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British Dictionary definitions for Pitot-static tube
combined Pitot and static pressure tubes placed in a fluid flow to measure the total and static pressures. The difference in pressures, as recorded on a manometer or airspeed indicator, indicates the fluid velocity: Also called: Pitot tube
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012