Compound Pressure Vacuum Gauge Glycerine Filled -1/10Bar & 30 1/4 BSP Bottom Vacuum Manometer Mini Dial Vacuum Pressure Gauge Meter Stable Pressure Gage Double Scale 1/4" NPT Lower Mount -30HG/0PSI Specifications: Dial Size: 52mm / 2" Accuracy: +/- 4/3/4% Scale: Scale inHg / Bar Movement: Copper Alloy Bourdon Tube: Copper Alloy Window: Glass Case: Steel for case for protection in harsh environments Connection: Copper Alloy Lower Mount Normal Ambient Temp.: -4F to +140F (-20C to +60C) Notice: 1,Please allow 1-3cm error due to manual measurement. Please make sure you do not mind before you bid. 2,The color may have different as the difference display, Please understand. Package Included: 1 x Vacuum Pressure Gauge