The RAM Arrow Spine Tester is a precision tool for archers and arrow makers who demand consistent arrow flight. It helps you sort arrows by spine and quickly pinpoint the stiffest side of each shaft to improve tuning accuracy and repeatable results.

• Precision spine dial: reads in increments of.0005 inches for fine spine measurements and reliable sorting.
• Spine sorting by shaft stiffness: groups arrows by spine value so you can build matched sets for consistent flight.
• Stiffest-side identification: identifies the stiffer orientation of the arrow to optimize nock alignment and release consistency.
• Fast, repeatable workflow: streamlined testing process minimizes guesswork and speeds up pre-season arrow prep.
• Color option: available in a high-visibility yellow variant for easy identification in busy workshops.

Using the RAM Arrow Spine Tester helps you avoid arrows that undermine flight stability and group tightness. By accurately sorting shafts and identifying the stiffest side, you can assemble spine-matched arrow sets for tighter groupings at distance and through fast strings. This tool is ideal for target archers, club shooters, and pro shops that prepare arrows in batches. It reduces tuning time, minimizes wasted arrows, and supports repeatable tuning across practice sessions and competitions. For best results, incorporate it into your overall arrow-building workflow—test multiple shafts, organize groups by spine, and maintain consistent shaft orientation during fletching and assembly.