Air pressure and hydraulic pressure The series main contain follow general specification Case Sizes: 1.5", 2", 2.5" Pressure Range: With range from 30inHg(vacuum) through 15000psi Bourdon Tube: With phosphor brone material, range from vacuum through 1000psi in C-form, soft soldered, range above 1500psi in helical, silver soldered Movement: With brass material Cases and Ring: The ring which retains the window is snap-on type, chrome-painted or black finish steel material as resquest Connection: With brass material, bottom mounting and backside mounting available, 1/8", 1/4", 1/2", 3/8"PT, NPT, BSP are the standard threads, available for suitable dial diameter Dials: Dials are uniformly graduated and have highly legible black markings. In single scale(psi, bar Kpa, Mpa, or kg/cm2) or dual scales as request Windows(Lens): Pressure gauge are executed with lens made of acrylic, glass Pointer: Pressure gauges are standard executed with a fixed pointer unless otherwise specified Accuracy: Standard by ASME B40.1 Options: Many different styles and materials are offered, open gauges with and without device and solid front or back flange gauges or with U-clamp. Custom dial face, special connections, e-mail us or our distributor your logo or draw for special connection