1.   Measurement range: 0.7mm~250.00mm;
2.   Display resolution: 0.01mm or 0.1mm;
3.   Indication error: ±(1%H＋0.06)mm;
4.   Pipe measurement threshold (steel): φ20mm×3.0mm(L51 probe), φ15mm×2.0mm(L77 probe);
5.   Value of error of no more than±0.06mm;
6.   Sound velocity adjusting range: 1000m/s～10000m/s;
7.   The known thickness measuring sound velocity: measurement range1000m/s～10000m/s,thickness of the block≤20mm,Sound velocity measurement precision is ±1mm/H×100％;thickness of the block>20mm,For sound velocity measurement precision is±5％;
8.  Operation  temperature: 0℃~40℃;
9.  Power: 1000mah Li-On rechargeable;
10. power dissipation: working current<50mA(Don't open a backlight); 
11. Dimension: 133mm×66mm×25mm;
12. Weight: 0.13kg;