The vacuum gauge incorporates a variety of innovative functions and has unparalleled performance. This vacuum gauge can be a higher and more accurate vacuum gauge that can measure the entire vacuum process under atmospheric pressure to 1 micron. You will immediately know your link Whether it is a vacuum-tight link. Features: wide range from atmospheric pressure to 1 micron Hg, high-quality Pirani sensor, high-definition large-screen display intuitive Longer lasting: super performance, can be used for about 45 hours normally, easy to handle complex working conditions More durable, dust-proof design IP54 suitable for all kinds of on-site testing, high stability chip effectively suppress interference Humanization: comfortable operation, 8ms quick response, large screen display is easy to read, display division value, 4 standard units one-key switch Accessory type: 1/4 inch male flaring (710-202-Gg1 type) Accessory thread: 7/16-20UNF (710-202-G1 type) Display unit: micron Hg, Pascal, Hobar, Tort Display range: atm (760000 microns of mercury) to 1 micron of mercury Accuracy: 0~200 μm Hg: 10 μm Hg>200 μm Hg: ±10% of reading Display division value: 1 micron Hg, 0.1 Pascal, 0.001 mbar, 0.001 Torr Maximum overpressure: 150PSI (7.76*10^6 micron Hg) Power supply: 9V alkaline battery Working hours: 45 hours Size: 3.2*1.1*7.1 inches (82*29*180mm) Weight: 0.52 Package: 1x vacuum gauge, 1x storage box, 1x manual, 1x replacement filter, 1x9V alkaline battery