The AUTO INGOT is an acoustic tomograph for volume inspection of single crystal ingots (Si, Ge, GaAs e.g.), analysis of voids, inclusions, estimation of the depth and size simultaneously. It enables inspection of 5-12 inch Si ingots up to 400 mm thickness and a weight of 75 kg. The defect resolution down to 100 µm voids is possible in Silicon. Investigations of large and heavy parts must be customized according to geometry (load port and scanner).