Cavity Autoscanning Laser System (C-ALS) is a ruggedised 3D laser scanning system. With a diameter of just 50mm, the unit is deployable down boreholes for surveys of underground voids and cavities. The C-ALS measures the three-dimensional shape of the void and it’s surface reflectivity. A motorised 2-axis scanning head ensures a complete 360° scan covering the entire void up to a range of 150m. Along with the scanning head, the C-ALS design incorporates a digital compass as well as pitch and roll sensors. These enable accurate positioning and orientation of the unit itself and the resulting ‘point cloud’.

The C-ALS is deployed by cable, but in areas where there is magnetic interference, the C-ALS can be lowered with fibreglass Boretrak® rods which ensure that the scanner’s azimuth is constant.. We have provided surveys of Tunnel Vent shafts – Higham & Strood, Tunnel Linings - Haymarket, Argyll, Shakespear, Ore,…… undertake ground subsidence or domestic structure surveys for insurance companies through to surveying power station boilers and water cooling systems

This is one of a number of laser scanning devices we have  available.