Sinclair International Case Neck Wall Thickness Micrometer with Starrett Head

Description

If you turn necks or just want to sort brass by wall thickness, this is the kind of tool that earns a permanent spot on your bench. The Sinclair International Case Neck Wall Thickness Micrometer is built around a genuine Starrett micrometer head that reads in .0001 inch increments, so you can catch the tiny variations that a standard dial caliper will walk right past. The whole thing comes mounted to a weighted stainless steel base, which means both of your hands stay free to spin and position the case while you read.

What Sets the Sinclair Neck Micrometer Apart

The real trick here is the adjustable head and anvil. You can slide the measuring point right up to the junction where the neck meets the shoulder, which is exactly where thickness tends to vary the most and where a lot of lesser gauges can't reach. The ratchet control on the Starrett head lets you dial in a repeatable feel, so every measurement comes off the brass with the same tension instead of you guessing at pressure. Handloaders consistently point to that repeatability as the reason they stop reaching for a handheld mic once this is on the bench.

How the Case Neck Micrometer Fits Your Reloading

This tool works on .17 caliber cases and larger, so it covers just about anything you'd be loading, from tiny varmint rounds up through big magnums. It's a natural companion to a neck-turning setup, letting you measure before and after you cut to confirm you're hitting your target wall thickness and holding uniformity around the neck. It's just as useful for the no-turn crowd who want to sort a batch of brass and cull the uneven pieces before they ever see a die.

The micrometer head sits in an anodized aluminum frame, the anvil is stainless steel, and the unit ships pre-zeroed and made in the USA. One thing worth knowing: the printed numbers on the Starrett head are on the small side, so folks with tired eyes sometimes keep a magnifier handy.