Mini Tech SPG A clean, black and white face means the Mini Tech SPG is easy to read. This naked gauge has a 2-inch diameter with a 1.75-inch face (RG 2762-NH). 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.
