1. Function and application
2. Features
1) Can be configured with double chip probe of different frequencies and chip sizes;
2) Zero calibration, a two-point calibration function, can make correction of the system errors;
3) Can measure the sound speed through the thickness, to improve the measurement accuracy;
4) Has coupling state indication function;
5) EL background display can be used in dark environment;
6) Residual quantity indicator function, which can real-time display the remaining battery power;
3. Main technical parameters
| Display method | 
					high contrast segment liquid crystal display, high  brightness EL backlight | 
| Measurement range | 
					0.75-300mm(steel), the metric system and British  system can be converted | 
| Sound speed range | 1000-9999m/s | 
| Resolution | 0.1MM | 
| Accuracy of indicated value | ±(1%H+0.1)mm | 
| Measurement period | Single point: 4 times/s, scanning mode: 10 times/s | 
| Storage capacity | 
					Can store 20 groups(Max. 100 measurement value  for each group) of thickness data | 
| Working mode | Single point and scanning point | 
| Communication port | No | 
| Unit | Metric system or British system (optional) | 
| Working voltage | 3V two AA alkaline battery | 
| Continuous working period | More than 100 hours (without backlight) | 
| Dimension | 150 x 74 x 32 mm | 
| Weight | 245g |