A device used to measure the air speed of an aircraft. The device consists essentially of a unit combination of a pitot tube and a static tube used principally in measuring impact and static pressures. The difference between impact and static pressure is used to measure the velocity of flow past the tube by means of a differential-pressure gauge. The static pressure from a pitot-static tube may, in addition, be used in the operation of an altimeter and similar instruments.

Also called pitot-static head.