PTS-D20 Crack depth gauge used for the quantitative detection of concrete cracks depth value. The equipment is mainly constituted by the host control transmitter - receiver probe and connecting cable. Test methods: single-point fast measurement or multi-point accurate measurements. Product Features: Two kinds of test methods can be quickly and accurately measure the crack depth. Measurable concrete wave velocity values Automatic analysis, direct crack depth, without manual calculation Industrial-grade 5.7-inch large-screen highlight touch screen, clear and reliable (daylight visible) Large-capacity lithium battery-powered, and work continuously for more than 4 hours, repeated use Built-in memory, USB data interface, storage of data for easy import into computer Technical indicators: Test the depth range :10-400mm Sound accuracy: 0.1us Test accuracy: 3% Memory: 1G Display: 5.7-inch bright wide temperature screen, with industrial touch screen Power supply: high-capacity lithium battery (battery warning function) Operating Temperature: -40 ℃ ~ +85 ℃