Technical installations and buildings, e.g. bridges or embankment dams are subject to strict inspection and safety regulations, which is why they require regular inspections. Data acquisition for these inspections are often associated with great time and financial expenditures. 

High-resolution sensor systems for crack detection in the sub-millimetre range allow for minimal abnormalities to be detected and safely assessed by surveyors.

During inspections required to be performed regularly the GPS control facilitates fully automated approach of specified check points.