Testo-0560-5522-552-Digital-Vacuum-Gauge-with-Bluetooth-Testo-0560-5522-P-The-Testo-552-is-a-digital-vacuum-measuring-instrument-ideal-for-use-during-the-evacuation-of-refrigeration-systems-and-heat-pumps-It-measures-even-the-smallest-absol…View more