main function
1,Testing the position of the steel bar
2,Testing the thickness of the protecting floor
3,Testing the diameter of the steel bar and the thickness of the protecting floor
4,Section plane test
5,Internet test
6,Data’s storage and examination
7,Data’s transfers
Apparatus’ volume: 225mm×180mm×80mm
Probe’s volume: 110mm×55mm×28mm
Dolly’s volume: 142mm×79mm×57mm