BIT measures the verticality of open boreholes and all kinds of deep foundations: drilled shafts, precast piles, H piles, and even sheet piles.
BIT uses the auger/bucket as the centralizer in the borehole. Eliminating the need for a heavy-to-move system. A special centralizer is used to lower the sensor into a standard access tube of an existing pile.  The BIT comes with 80m cable. 
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No expensive inclinometer tubes
Lightweight 1-person simple operation  
Works on any diameter
ASTM D8232-18 Standard compliant