The Presidium Diamond Mate Tester has a retractable probe tip that ensures consistent pressure against the gemstone during testing for more reliable results. With the industry’s thinnest probe tip size of 0.6mm, PDMT tests diamonds as small as 0.02ct. Test results are instantly indicated by an LED light and continuous audible beep.Operates on alkaline AAA batteries.(not included)May be used with AC adapter.Features Retractable thermoelectric probe tip for enhanced accuracy that ensures constant pressure between probe and gemstone Industry’s thinnest probe tip (0.6mm) for testing diamonds as small as 0.02ct Metal alert buzzer to ensure that probe tip is in contact with gemstone during testing No waiting time between tests Clear and easy-to-read LED display Low battery indicator Low battery consumption Leather carrying sleeve included Dimensions and Weight Length: 160mm (6.3 inches) Width: 21mm (0.83 inches) Height: 30mm (1.18 inches) Weight: 45g
