Triggerman Designs - Knob Job

Precision Adjustment System Kit.

#TM KJ

This piece comes in kit form and assembly is required.
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.)