A clean, black and white face means the tech SPG is easy-to-read. 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. A tempered glass face is impact and scratch resistant, while the luminescent dial makes it easier to read in low light situations. Comes standard as a naked SPG with a spool to attach a hose swivel to the gauge. A boot is available as a separate option, if desired. The tech SPG is suitable for oxygen service and is ce approved.