This 1" mini / micro air pressure gauge has a PSI range from 0-300 and features a 1" face. This is a center back mount threaded gauge with 1/8" male NTP threads that extend behind the face of the gauge. This a high quality gauge with pressure markings every 10 psi and number markings at 50, 100, 150, 200, 250, and 300 PSI. 

(Note: This is a very small gauge with only a 1" in diameter front face.)