The Triplett UTG300 Ultrasonic Thickness Gauge can detect the thinning of pipes and pressure vessels from corrosion and make accurate measurements of plates and machined parts widely used in petroleum, chemical, metallurgy, shipbuilding, aviation, aerospace and other fields. It has a switchable Metric (mm) or Imperial (inches) readout with a thickness measurement range of 0.04" to 11.81" (1 to 300mm) and sound velocity range of 3280 to 32805ft/s (1000 to 9999m/s). Results can be viewed on the 2.4" monochrome dot matrix display. High/Low alarms sound when the reading is higher or lower than the user-settable reference and limit values. Select between single measurement, or continuous with real-time min/max/avg. You can manually store/recall up to 300 records with measured value/min/max/avg and sound velocity. A USB-C interface is provided for recharging the battery (uses any standard 5V/1A charger, not included). Includes 5MHz probe, built-in 3.7V 2000mAh lithium battery with USB type C charging cable, and couplant (0.7oz/20g pouch).