AltitudeCraft Anvil Base Kit AC390

Upgrade your reloading measurement consistency with the AltitudeCraft Anvil Base Kit, specifically engineered to deliver reliable CBTO and headspace readings. Machined from aerospace-grade anodized aluminum, this durable base attaches to the opposite caliper jaw to create a broad, stable surface that eliminates alignment tilt and ensures case heads rest perfectly flush.

Featuring an integrated thumb screw for fast, tool-free installation, the compact anvil base fits seamlessly onto standard dial or digital calipers. Its rigid, wobble-free platform enhances measurement repeatability across high-volume brass sorting and precision shoulder bump adjustments.

Key Features

Highlights

• Designed for Precision Reloading: Upgrade measurement consistency with this anvil base kit, engineered to deliver reliable CBTO and headspace readings. It provides a stable rear contact point for a caliper, ensuring that case heads rest flush every time.
• Improves Consistency and Eliminates Tilt Errors: Eliminates misaligned readings. This anvil expands a caliper’s contact area and eliminates issues caused by narrow caliper jaws, preventing tilted cases and improving repeatability across sessions.
• Tool-Free Setup in Seconds: Easily attach the anvil to the opposite blade of a caliper using the integrated thumb screw; no tools or extra adapters are needed. It is quick to install, easy to remove, and fits seamlessly into a workflow.
• Solid Aluminum Build for Long-Term Accuracy: Machined from high-strength aluminum alloy, the anvil base offers a firm, wobble-free platform with excellent durability. The wide contact face keeps everything level and secure, even with repeated use.
• Compact, Portable, Reloading-Bench Ready: Compact enough for any bench setup and light enough for travel, this is a tool for reloaders who value precision and portability. Whether sorting brass or tuning shoulder bump to .001", this tool delivers measurable improvements.

Videos

Materials & care

Wipe clean with a dry microfiber cloth after use. Avoid abrasive cleaners or harsh chemicals to preserve the protective anodized aluminum finish.

Compatibility

Compatible with most standard digital and dial calipers, as well as conventional caliper-mounted bullet and headspace comparator sets.

How to use

Slide the anvil base onto the caliper jaw opposite your comparator body and tighten the integrated thumb screw by hand until secure. Rest cartridge case heads flat against the broad anvil face to measure headspace or cartridge base to ogive (CBTO).

What's included

• 1× Anvil Base
• 2× Screws