This paper describes work which has been carried out to investigate a rotating stereoscopic imaging system consisting of two line-scan cameras for measurement. Algorithms have been proposed and experimentally tested which allow three-dimensional co-ordinates to be derived from a defined object workspace. The use of stereoscopic imaging is not new; however, what is novel in this approach is the method used to produce panoramic images of the workspace surrounding the rotating line-scan camera. This system is particularly suited to applications which require the `all-round' observation of a scene. These include autonomous vehicle guidance and path-planning for complex manipulator manoeuvres. The results indicate that the positions of targets can be determined, at best, to a measurement accuracy of within mm in the X axis (horizontal), mm in the Y axis (vertical) and mm in the Z axis (range) at a camera-to-object range of 1.5 m.