Dial sizes: 2.5" Case type: black steel case, with black steel bezel(or stainless steel roll ring for U-clamp mount) Window: glass window Face and pointer: aluminum finish Movement: brass Tube: brass or phosphor bronze tube Connection: brass bottom connection, Thread:1/8", 1/4", NPT, or according to customers requestAccuracy: +/-3-2-3% of FSD Pressure range: 160psiRestrictor: standard for all range Application: for measurement of steam, air, oil, water and other pressure media, which have no effect on bronze and brassView all pressure gauge and glass thermometer and bimetal thermometer