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When it comes to measuring cartridge dimensions on the reloading bench, few tools carry the reputation of the Starrett 120A-6. This is the 0-6" model with the white dial face, graduated in .001", and it's the one caliper widely considered the finest dial caliper you can buy. The bar, measuring surfaces, rack, gears, and depth rod are all hardened stainless steel, so it holds its accuracy through years of daily use instead of drifting out of spec after a season.
For handloaders, this caliper covers all the measurements that matter. You can check case length, base and neck diameters, cartridge overall length, and primer pocket depth without swapping tools. The knife-edge contacts handle both inside and outside measurements, and the covered rack depth rod lets you drop into a case or hole cleanly. Machinists and mechanics have leaned on the 120 series for the same reasons, since it reads direct with no batteries to die mid-session.
The white face with sharp black graduations is easy on the eyes, and the satin-finished bar keeps glare down so you're not squinting at your numbers. It reads .001" to .100" in a single revolution, which keeps the math simple. The thumb-operated fine adjustment roll means you can work it one-handed, and a lock screw holds the dial bezel while a second lock screw pins the sliding jaw in place when you want a reading to stay put. There's even a handy trick where you can scribe parallel lines by setting the jaw, locking it, and using the fixed jaw edge as a scribe.
Starrett runs a positive, split-gear anti-backlash control and points the rack teeth downward so debris and chips shed off instead of gumming up the movement. That kind of detail is why folks who've handled hundreds of these on shop floors keep coming back to the brand. It ships in a fitted plastic case, so it has a home when you're done for the day.
Yes. It reads to .001" accuracy, which covers case length, overall cartridge length, neck and base diameters, and primer pocket depth. That's the level of precision handloaders rely on to keep loads consistent, and the Starrett holds it better than budget dials over the long haul.
It does all three. The knife-edge contacts handle inside and outside measurements, and the 6" model uses a covered rack depth rod for depth and step measurements. You can also scribe parallel lines by locking the jaw and using the fixed jaw edge as a scribe.
It's made in the United States, and Starrett bills the 120 series as the only American made dial caliper. The bar, measuring surfaces, rack, gears, and depth rod are all hardened stainless steel for long tool life.
A dial caliper never needs batteries, so it's always ready when you sit down at the bench. Many reloaders and machinists also prefer the tactile feel of the thumb roll and the direct dial reading, which stays put without worrying about a screen going dead mid-session.
| UPC | 049659645149 |
|---|---|
| Manufacturer | |
| Color | White |
| Length | 9'' |
| Quantity | 1 |
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