Dial size: 2-1/2", blue backlight Plastic case and protective boot, Solid brass connection, standard 1/4"NPT male 0-15psi, bar, kg/cm2, kpa, Accuracy:1% Product description Size:2.5" 1/4"NPT lower Long thread 0-15psi Description"For pneumatic, air pressure measuring, typical for ...Dial size: 2-1/2", blue backlight Plastic case and protective boot, Solid brass connection, standard 1/4"NPT male 0-15psi, bar, kg/cm2, kpa, Accuracy:1% Product description Size:2.5" 1/4"NPT lower Long thread 0-15psi Description"For pneumatic, air pressure measuring, typical for tire gauge, tire inflator, air pressure system etc. - This digital gauge is not suitable for liquid media. - Screen: LCD screen, blue backlight, one press ""ON"" for open the system, press ""UNIT"" for pressure unit changing, press ""ON"" for 9 seconds, for LCD light - Backlight for 30 seconds, autooff: 2 minutes 45 seconds2 Batteries AAA, at back, easy for replacement - Connection: standard 1/4""NPT male chrome plated solid brass - Resolution: 0.01psi - Range: 0-15psi, bar, kg/cm2, kpa - Accuracy:1%It is time to change to use our better digital gauge "Measureman" products are selected and designed by professional engineers.