Our Sinclair Bullet Comparator attaches to the blade of your caliper and
uses inserts for each specific caliber. The inserts are stainless steel
and machined with a taper and a short straight section to more
accurately duplicate the chamber throat. This eliminates the wobble
experienced with many comparators which have standard drilled holes. Our
design allows you to quickly and accurately measure the bullet's
bearing surface of the bullet. Comparator inserts are available in 17
thru 45 caliber, and they can be used in both the Sinclair and older
Stoney Point comparator bodies. These inserts are not intended to
measure rounds seated to magazine length or shorter.
Comparator Body sold separately and calipers are sold separately.