The Redding 6mm PPC Instant Indicator is a tool for quickly measuring headspace and bullet seating depth within .001" for hand loaders.
It allows for comparison and sorting of bullets, cases, and loaded ammunition to ensure uniformity, as well as setting up sizing dies and checking shoulder bump and trim length.
The product comes with a dial indicator, one bore diameter bushing, surface contactor, shoulder contactor, headspace gauge, and complete instructions for use.