The Forster Datum Dial Body Assembly (brand part no. DD1010-102) is the replacement body for Forster’s Datum Dial system, the piece that clamps onto a set of digital calipers and holds an interchangeable cartridge dial for a given caliber. Forster Products sells this body without a cartridge dial included, so it’s meant for handloaders who already own dials for other calibers and need a spare or replacement body, or who are buying a body and dial separately. It measures base-to-ogive and base-to-datum length, both used to compare fired-case headspace and seating depth from round to round.

Key Specifications

• Clamps onto a set of digital calipers to hold an interchangeable cartridge dial for Datum Dial measurements.
• Sold as the body only; caliber-specific cartridge dials are sold separately.
• Measures both base-to-ogive and base-to-datum length for comparing headspace and seating depth.
• Works as a universal base across any caliber that has a matching Forster cartridge dial.

Frequently Asked Questions

Does this include a cartridge dial for my caliber? No, this is the body assembly only; cartridge dials for specific calibers are sold separately.

What does the Datum Dial measure? Base-to-ogive and base-to-datum case length, both used to track headspace and seating depth consistency.

Buy the Forster Datum Dial Body Assembly

Order the Forster Datum Dial Body Assembly from our Lubbock, Texas gun shop for fast shipping to your bench. See our reloading equipment selection for matching cartridge dials.