Wika 113.13.20.300.B Commercial Pressure Gauge, 0 psi to 300 psi, 2 in Dial, 1 4 in NPT Male, Center Back, Plastic 38HY50 so you can't accidentally touch so you can't accidentally touch them when installing or adjusting your wire For Use With Steam Shape Straight Type Adapter Connection Style Barbed Male × Threaded Female Barbed Male Connection Type Interlocking Clamp Barb Style Standard Number of Barbs Multiple For Hose ID 3 4" For Hose OD Range 1 5 32" to 1 5 16" Pipe Size 3 4 Thread Type NPT Material Zinc Plated Steel Clamp Material Zinc Plated Steel Wing Nut Material Zinc Plated Iron Hex Bushing Material Zinc Plated Steel Gasket Material Polymer Plastic Maximum Pressure 250 psi @ 72° F Maximum Vacuum 28 in Primary Pressure Range 0 to 300 Nominal Dial Size 2 in