42 i hope you don't take this as too personal or negative but you remind me of those that taught metrology back when I knew a lot less than I do now. You manage to express and turn what are in fact non complicated issues into a paper fit for a master's degree.
This is after all a forum for those working with machines and checking/measuring what they make from a hobbyist's perspective. From what I read the vast majority are both knowlegable at what they do and have the common sense to do what is right.
Well, it is a remark of a personal nature, isn't it? However, I am not insulted or bothered in the least by it. It is simply my style to strive for technical accuracy when I write something on the Internet (or elsewhere) that may be read by those perhaps less informed or experienced than I. I am also aware that the majority of the members here are knowledgeable, and yet at the same time, many are beginners.
And the drivel I write here most certainly would not pass for a Masters thesis, but thanks anyway.
A suggestion. Why not start a thread with the title "the theoretical side of Metrology". It would prove interesting (at least to me) as there are a couple of things you have written that I don't agree with. The only reason I haven't stated what they are in a current thread is so as not to off track the thread/theards in question completely.
I will not do a thread on this forum that addresses the Theoretical Metrology for the same reason you stated as the reason I shouldn't write the way I do: This is a Hobby Machinist Forum. I'm sure it would bore most of the members anyway, and fail to be pertinent to their machining activities.
It almost certanly isn't your intention but I feel that I'm being spoken down to when I read much of what you write.
Gordon
Gordon, that is absolutely the last thing I want to do, or even give the impression of doing to you or anyone else. I have respect for my fellow man. Especially so for those who would take up machining for a pastime. Most people who do it for a living too, for that matter. There is so much talent on this forum, and many others, that I that look up to my fellow members, never down. I sincerely apologize if you feel slighted or insulted. It is not intended at all.
Re your first sentence - does the micrometer really come with a manual? Stating what you write after 7. then I can only say that any manual having something like that in it would be a first for me.
It may not come with a printed manual, but the website HF markets the instrument on has a download of it, and I was merely quoting from it. I did not feel it necessary to paste in the entire section I quoted. Like so many things though, I have my doubts about the veracity of the statement.