This replacement body assembly provides all the components needed to mount a Cartridge Dial and maintain a complete Datum Dial setup for multiple commonly used calibers. The kit includes a 6-32 x ½” Socket Head Cap Screw, washer, ball detent, body, thumbscrew, cup point set screw, and two hex keys (7/64″ and 1/8″). Cartridge dials are sold separately.
The Forster Products Datum Dial measures the relative distance from the base of a case to a datum point on its shoulder angle. Deploy it before sizing to establish optimal headspace for your firearm, or after sizing to verify setup accuracy and reloading consistency. A caliper is required for operation. This body assembly is universal caliber compatible, making it an essential tool for precision reloaders who demand measurement repeatability across their ammunition preparation workflow.





