3-head aerial amesdial

The utility model discloses a triple head air micrometer, which comprises three reading meters including a first reading meter, a second reading meter and a third reading meter that are respectively connected with a first air nozzle, a second air nozzle and a third air nozzle via three air tubes. The first air nozzle, the second air nozzle and the third air nozzle are all positioned on a platform; the first air nozzle, the second air nozzle and the third air nozzle are fixed vertically in parallel on the platform. Based on the original structure, the utility model improves the structure of the air nozzle by changing the original single nozzle head into three nozzle heads and improving the sequential measurement of G2/K distance by a red electron gun, a green electron gun and a blue electron gun into an once-for-all measurement, thus boosting the measurement efficiency by two times.