This instrument provides an extremely fast and accurate method for comparing the shoulder position of fired and/or sized cases and bullet seating depth uniformity. The addition of the ?Range Adapter? makes this instrument more versatile and may now be used at the range or in the field without requiring the use of a reloading press. All Instant Indicators also include one bore diameter bushing surface contactor shoulder contactor headspace gauge and complete instructions. Check uniformity of shoulder bump Check bullet seating depth uniformity Compare sized cases to fired cases to determine the amount of headspace Sort cases fired in two or more rifles Sort sized cases for uniformity Set up sizing die correctly Check trim length uniformity Sort bullets for uniformity