When paired with the OT-4040 CPU, the system provides a clear readout of X and Y displacement on the display. The CPU can also zero a set spot position, detect continuous wave or pulsed sources and output data in ASCII characters which can be logged by a PC or data logger.
As the target area is large a removable light tube is included to shield the detector from ambient light. To ensure accurate mounting the target features a precision dowel pin indicating the centre of the target.