Sort your arrows for perfect consistency of spine (dynamic stiffness). Precisely index arrow nocks to the stiffest portion of the arrow shaft for the tightest groups. Check the concentricity of your point to an amazing +/-.0005" for a super accuracy. Measure the straightness of arrows from the tip to tip. Monitor the degradation of arrow spine over the course of the season to catch problems before they show up on your score card. Provide your customers with a valuable service, the ultimate in arrow accuracy.