Ace Archery Tackle Spine Master (Model 203)

Just what wooden arrow users have been waiting for - easily and accurately test the spine of your wooden shafts. 

Features:

• Conveniently mounts on your wall
• Engineered to give accurate spine and deflection readings
• Reads 25 to 100lbs and .200 to .900 inches of deflection
• Works with shafts from 5/16" to 23/64"
• Easy to setup and use
• Constructed from durable steel and brass