Brownells 75th Anniversary - A Shooting Heritage

Find Barrel Thickness & Concentricity Before You Try To Thread

Know exactly whether a customer’s barrel has adequate wall thickness before accepting and machining it for screw-in chokes. Unique design allows the gunsmith to mount the instrument (not the barrel) in a bench-top vise for ease of use and fast, accurate measurements. Aluminum block with steel probe and gauge arm provide excellent stability and consistency. High-grade, Procheck brand, dial indicator measures to .001". Helps check barrel concentricity, too.

Big Book Catalog, Issue:70, Page:473
SPECS: Aluminum and steel, natural finish. 18¾" (47.6cm) long x 5" (12.7cm) high.
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