Copper beryllium spiral wound; bourdon tube; polycarbonate transparent window; plastic cover with loop for fixing: graduation 400 BAR/5000 PSI, full scale.Graduation displayClear, easy to read dial design; red zone from 0 to 50 BAR / 0 to 600 PSI; increments 10 BAR / 100 PSI, all over the scaleDual graduationFluorescent background will maintain readability for some time after being exposed to light
