The Tracerline TP-9365 PRO-Vac Vacuum/Micron Gauge, with its technologically advanced Pirani sensor, accurately displays the vacuum level at every stage in the evacuation cycle, from atmosphere down to one micron. The PRO-Vac features a large LCD for easy viewing, even in direct sunlight. It has a wide operating range from 760,000 microns down to 1 micron, and can display readings in microns, Pascal or millibars. The unit works with any standard vacuum pump.