As an engineer I'm all for Mitutoyo. I run a lot of their gear but the one thing I don't have is a good set of calipers... mainly because a while back somebody else decided they wanted my set more than I did. I presently have a set of Hornady digital calipers in my reloading cupboard and while they do the job and provide sufficient accuracy to enable you to load with some confidence I don't like them one little bit.
The Hornady units do not have an "auto-off" and worse, they automatically come on when you move them. Several times I have found them turned on just by the action of putting them away. Consequently I seem to need a new battery just about every time I pick the bloody things up. I would of course be happy to sell you these in order to fund a decent set for myself.
By the way - digital is not always better, especially when it comes to "reference" measuring. I agree with @Tommy - a reasonable dial set of calipers is always easier and faster to use in this way and they often make more sense too.
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