Danatronics offers our new ultrasonic precision thickness gauge series ECHO 7. The ECHO 7 represents the most advanced thickness gauge we've ever made. ECHO 7 offers A 3.5-inch high-resolution sun-readable color display with real-time A-Scan using a variety of contact, delay lines, and immersion probes at frequencies of 1-20 Mhz as default and custom created and stored application Settings, B-Scan, Data logger with up to 32GB SD card memory and Microsoft excel interface. ECHO 7 is available in four models, including ECHO 7, ECHO 7DL, ECHO 7W, and ECHO 7DLW. Alarm clock vibration function is innovative, very suitable for noisy environment.