Gas Pressure Gauge Material: Steel, Aluminum, Copper, Plastic, Rubber Weight: 115g LCD readout, auto shut off, blue or green backlight Accuracy: ± 1% .F.S @20℃ Resolution: 0.5 psi Pressure range: 300 psi Operation Temperature Range: -25~50℃ Batteries: 1.5V(AAA)X2 Batteries Connector Thread: 1/8'NPT Display Unit: Psi, Bar, Kgf/CM², KPa Product size: Φ76 * 32 cm Backlight Off Time: 30s Auto off Time: 60s Low Battery status in the display Gear shape rubber protector Rubber Material: TPR