Straightness measurement of boreholes

Measuring the position of a borehole in rock and soil provides valuable information, which would otherwise be impossible to obtain other than by excavating the hole (which could be a difficult process if the hole is 2000 m deep). Common applications are:

• The straightness measurement of energy boreholes in order to check that effective use is made of the soil and rock masses
• A 50 m deviation in a borehole that is 200 m deep is not uncommon. Straightness measurement of boreholes for grout curtains
• The measuring-in of prospecting  boreholes to check the position of the borehole in relation to the evaluation of bore cores
• The measuring-in of unfinished contract boreholes to guarantee that they emerge as intended before they are fully drilled.