Micrometer types

[EdK]

Time to revive this old but interesting thread. I posted a picture of this micrometer some time back.

   

I finally got around to using it to measure my nuts.  

I'm not at all happy with the results. It's a Mitutoyo 103-114 with a plain thimble and no lock. When I remove the micrometer from the part I'm measuring the thimble turns all on its own. Not good. Checking Mitutoyo's web site, they don't even acknowledge that they ever made that model. That should tell you something. Anyway, I intend on replacing it with either a friction or ratchet thimble model and was wondering what type others like and why?

Ed