This is the DiveRite Scuba Diving Mini Tech SPG Pressure Gauge up to 5000 PSI Features: 1.75-inch face 2-inch diameter Tempered glass face is impact and scratch resistant Luminescent dial makes it easier to read in low light situations Calibrated to 5000-psi in 100-psi increments (360-Bar in 10-Bar increments) Includes 32" hose with boot Model # RG2762 A clean, black and white face means the Mini Tech SPG is easy-to-read. This gauge has a 2" (5.1 cm) diameter with a 1.75" (4.45 cm) face. A Bourdon tube gauge, the Tech SPG is calibrated to 5000-psi in 100-psi increments (360-Bar in 10-Bar increments) for the highest level of accuracy. Comes standard 7/16" threaded 32" (81.3 cm) high pressure hose and impact resistant rubber gauge boot with eyelets for attachment to lanyard or clip. The Mini Tech SPG is suitable for oxygen service and is CE approved."