A simple Low cost position verification device, developed primarily for application in medicine is described. The design lends itself however to countless other applications particularly in civil and mechanical engineering. The resolution of the device depends on the diameter of the fiber optic used, the sophistication of the controlling microelectronics and optical collection system. In essence the device monitors any movement with respect to a basic reference frame defined by the beam of a helium/neon laser. The laser being attached to a remote structure which can be assumed to be fixed. A real-time positional display will enable the operator to correct for any unacceptable movement, or with a suitable feedback system this could be done automatically.