Patent ID: 8408062

Claim:
A scanning device useful for scanning a body having a bore which extends through the body and is accessible from outside the body, the scanning device comprising: a cylindrical rod having a longitudinal cylinder axis; a probe fastened on the rod and configured and arranged to be inserted into the bore for scanning the body, which probe, by displacing the rod in its longitudinal direction, is axially displaceable in the bore, and by rotating the rod around its cylinder axis, is rotatable around the bore axis; a controllable drive unit configured and arranged to longitudinally displace and rotate the rod, the rod extending through the drive unit; a control unit; wherein the drive unit comprises a first screw drive which, during rotation around the rod cylinder axis in a first rotational direction, longitudinally displaces the rod in a first direction, and during rotation around the rod cylinder axis in an opposite, second rotational direction, longitudinally displaces the rod in an opposite, second direction; wherein the drive unit comprises a second screw drive which, during rotation around the rod cylinder axis in the first rotational direction, longitudinally displaces the rod in the second direction, and during rotation around the rod cylinder axis in the second rotational direction, longitudinally displaces the rod in the first direction; and wherein the two screw drives are connected to the control unit.