... : 3 digits TN type LCD, Two Interface: Bottom & Back. Pressure Gauge Manometer SPG-020Product Description: This item can test the non ... PSI, 200PSI.And it can be widely used for various Tire Inflators, Mini air compressor,Mini air pumps, Floor pumps, Regulator ... .5V DC x 2 GPA76 non-changeable SPG-020 Pressure Gauge Manometer