This app connects to the BIT device
http://piletest.com/Show.asp?page=BIT
** Borehole
BIT uses the auger/bucket itself as the centralizer. Eliminating the need for a heavy-to-move system.
The BIT enables fast and accurate determination of inclination in both dry and wet boreholes.
Large boreholes and diaphragm-walls may be quickly tested several times during drilling to enable real-time corrective action.
** Existing piles:
A special centralizer is attached to the BIT sensor and lowered into a standard access tube (No need for an expensive inclinometer tube). The BIT sensor includes a gyro which constantly measures and compensates the rotation of the sensor in the tube.