McMaster 4004K63 Dual Scale Pressure and Vacuum Gauge with Steel Case, 2 1 2" Dial Diameter, 1 4 NPT Bottom Connection, 0–100 psi 21WL75 Side to Center 9 16 in Side to Center 9 16 in 15 16 in Nonsparking No Non Magnetic No Head Offset Angle 15 Degrees Ratcheting No Container Color Red Head Type Offset Corrosion Resistant Yes Tether Style Tether Capable Handle Type One Piece Number of Tools 31 Box End Type 12 Point Box End of Hg Environment Temperature Range 40° to 150° F Process Temperature Range 40° to 150° F Connection Type Pipe Pipe Connection Type Threaded Thread Type NPT Gender Male Case Material Steel Connection Material Brass Lens Material Polycarbonate Plastic Accuracy ±2% Accuracy Scale Mid Scale Accuracy Grade B Connection Location Bottom Vacuum Range in Gauges with steel case are more impact resistant than gauges with ABS plastic case