Vacuum Gauges Micron Gauges Micron gauges are made use of to determine right levels of vacuum in air-con units prior to charging with refrigerant. Right degassing and dehydration are critical to good general performance and to guarantee a protracted tools lifetime. +((!+[]+(!![])+!![]+!![]+!![]+!![]+!![]+!![]+!![]+[])+(!+[]+(!![])+!![]+!![])+(+!![])+(!+[]-(!![]))+(!+[]+(!![])+!![]+!