Robinair RAVG-1 Advanced Electronic Vacuum Gauge uses a patent pending MEMS Pirani sensor for highly accurate readings even at low micron levels and is not effected by changes in ambient temperature. The Robinair RAVG-1 micron gauge is designed with a color-coded backlit LCD that makes vacuum reading easy and intuitive, has six different unit values, responds quickly to changing levels, and is accurate down to 10 microns.