Hi Marty,

Power up machine while pressing reset button on pad. plane a plank incrementally to 20mm by ignoring display and verifying thickness with caliper. When you achieve 20mm press reset again and if the display was not at 20.0mm it will reset to it.

I am told that it works in inches as well but I have not personally verified it and above is what I was told by Felder.

Imran