DigiVac has an innovative compact portable vacuum gauge with ergonomically angled display. The Model 45 comes in a compact erconically angled table top display. This vacuum instrument comes standard with a varian 531 thermocouple vacuum gauge tube and measures vacuum in microns. It displays the typical range of vacuum for thermocouple gauges.. fom 1 micron through 1999 microns. The model 57 can also be ordered that is a wide range thermocouple gauge like our model 200, but displays vacuum in microns and comes in the same battery operated form factor as the model 45. This gauge was originally designed for the Neon industry with battery power to reduce effects from flashback, but has found it's way into many refrigeration and manufacturing toolkits.