The Hornady Rim Thickness Gage is perfect for rim fire enthusiasts who demand nothing but the utmost consistency. The gage allows the shooter to sort ammo by the rim thickness to find all ammunition that has similar ignition qualities to improve accuracy. This gage attaches to a set of calipers and will measure the rim thickness on 17 and 22 caliber ammunition.
Fits: Any 6" dial caliper Function: Measure rim thickness of rim fire ammunition Material: Aluminum and brass Notes: Includes bushings for use with all 17 and 22 caliber ammo
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