Abstract: A system for controlling the spacing between a plurality of saw blades. Precise control is insured by cascading an electrical feedback system in series with a mechanical feedback system.The electrical feedback system includes a position register for recording the actual location of each saw blade, a command register for recording the desired position of each saw blade, a comparator for generating an error signal corresponding to the difference between the actual and desired saw positions, and a stepper motor responsive to the error signal. The stepper motor drives a control shaft having a shaft encoder secured thereto which feeds pulses back to increment or decrement the position register, thereby synchronizing the contents of the position register to the actual position of the stepper motor.