CNG pressure gauge Compressed Natural Gauge for car and gas high accuracy: 2.5%, 1.6%c CNG pressure gauge1. Case size: 2 inches (50mm)2. Case material: black steel case3. Lens material: acryl4. Tube and socket: phosphor bronze and brass5. Movement: brassConnection: bottom or back 1/4-inch BSP, BSPT, NPT6. Pressure range: 0 to 400bar, 0 to 40MPa and 0 to 5,800psi7. Window: polycarbonate with ...