Carbon Express Pro Bow Square
Your Pro Bow Square allows you to attach the nocking point without removing the square from the bowstring.
Directions: The Pro Bow Square can be used to determine tiller by attaching the square to the string and resting the ruler arm on the top of the limb pocket and evenly against the limb.
The tiller measurement can be determined on the ruler arm of the square at the point where the ruler intersects the limb.
Repeat the above direction for obtaining measurement for the bottom limb.