KNOB JOB Precision Adjustment System
&
SCREW JOB Tire Trimmer Adjustment System
Installed

• This asembled and "Tuned Up" tire truer is a complete package. 
• The KNOB JOB Upgrade replaces the plain, loose fitting, Socket Head Stop Screw with a Micrometer Style Adjustment Screw that makes the final diameter of the ground Tire predictable and repeatable! The screw with the Red Knob is a longer Feed Screw (necessary because of the extra length of the Micrometer Style Adjustment Screw). The chart that you see in the picture is a record of the results from calibrating your KNOB JOB equipped Truer for the first time. (Some racers like their chart on top of the Grinding Drum Cover
• The SCREW JOB was inspired by requests from World Class Wing Car Racers! The Screw Job replaces that crude set screw adjustment of the Trimmer Arm with a Micrometer Style Lead Screw and Dial. Finally, a predictable and repeatable way to trim tires! Take the guess work out of too much traction! Will cut off any width up to 8 mm in 0.1 mm increments.