I NEED AN INEXPENSIVE ROTARY ENCODER/DIGITAL READOUT TO INCORPORATE INTO A CUTOFF DEVICE FOR ROLL FORMED PARTS THAT ARE PREFORMED TO VARIOUS LENGTHS AND RADII. PLUS OR MINUS .010" WOULD BE SUFFICIENT ACCURACY. LENGHTS TO 12'. READOUT IN FEET AND TENTHS OF FEET. "0" RESET REQUIRED ON READOUT...