Robinair RAVG-1 Digital Micron Vacuum Gauge Robinair's Digital Micron Vacuum gauge is a cutting edge tool with an industry first multi-color backlight that functions as an instant go/no go indicator of acceptable vacuum or leakage Patent Pending design employs a sophisticated MEMS Pirani sensor providing extreme accuracy at low micron levels and rapid response to changes in vacuum - range is from atmosphere down to 10 microns Large, easy to read 5 digit display shows vacuum readings in 6 different scales - Microns, mmHg, inHg, mBar, Pascals, or Torr Gauge features a features an impact and water resistant case with protective rubber boot, integrated 'magnetic' hook, and an auto shut-off feature that prolongs battery life Includes a protective carrying case and 1/4 inch male flare X 1/4 inch male flare and 1/4 inch female flare X 1/4 inch male flare connectors/adapters