A simple, effective way to visually check powder charges when you use a progressive press. The Powder Checker sits between the powder charging and bullet seating stations. Using a probe rod, it lets you visually confirm that the case is properly charged with powder before bullet seating. In addition to spotting a "no-charge" condition, the Powder Checker shows low and high charges too. Black oxide finish provides contrast for better visibility. For use with rifle and pistol cases.