RAM Arrow Spine Tester

You do not guess which shaft belongs in the group. You measure it.

A spine tester turns mixed arrows into a matched set before they ever leave the rest.

Sort by Spine: You lay each shaft on the tester and read the deflection. Weak and stiff arrows stop sharing the same group.

Find the Stiff Side: You rotate the shaft until the dial shows the stiffest plane. That plane becomes your nock index, shot after shot.

Fine Dial Reading: The dial moves in .0005 inch steps. Small differences that your eye cannot catch show up as a number you can act on.

Shot Consistency: Matched spine and indexed stiff sides keep your point of impact from wandering when the shot actually counts.

Shop Proof: Built to sort arrows and find the stiffest side of the shaft. That is the work this tool is for.

Match the shafts, then trust the group.