[Shop-talk] Micrometers

[J. F. Juhas]

I have a book on precision measuring instruments that describes how 
digital calipers work, and although I don't recall it clearly, I believe 
it suggested this technology is simple and inexpensive and so most 
bargain brands can be as good as the name brands.  I'll see if I can 
locate the portion of the book and send it to you tonight.

At the risk of making Mark even more envious, the same retired-machinist 
stash served up a Brown & Sharpe digital caliper.

eric at megageek.com wrote:
> Actually, I misspoke.  I need Electronic Calipers, no a micrometer.
>
> Here is the problem, I'm seeing plenty of these for my price range.  But 
> all of them seem to be built exactly the same (the inside teeth are fixed 
> to the outside teeth.)  This means that if the set isn't perfect when you 
> get them, there is no way to adjust them.  (This is the problem I have 
> with my current set.)
>
> SO, I'm back to my original question, but with the caveat of "is there a 
> way to know if they are REAL quality before you buy and ship them to your 
> house?"  Or is this the type of item you have to buy in person, say at a 
> Sears or even a HF store?
>
> Moose
> b
Be as beneficent as the sun or the sea, but if your rights as a rational 
> being are trenched on, die on the first inch of your territory.b
 Ralph 
> Waldo Emerson