The D100S unit displays the absolute displacement of the long-travel Sylvac probes P5, P10, P25, P50. Highest reso lution is 0.1 µm. It also allows for OptoRS simplex or duplex instruments to be seen. Numerous integrated functions will resolve most metrological problems, be they in the workshop or laboratory. The 8200 points backlit graphic read out provides tremendous flexibility and ease of use. Similarly, it allows the unit to be used simply and in a choice of 3 lan guages. All readings entered are protected from erasure if the unit is switched off (when switched back on, the unit returns exactly to the point where it was switched off, and the probe's position is retained). The numerous inputs/outputs of the unit, as well as its modest dimensions and ability to function from batteries allow it to be incorporated in a great variety of industrial locations.