Mike
My last shop had 3 sets of the Mitutoyo Tri-mikes, .25-8" plus some
extras where the use required. I used to do several specific jobs so I
kept 5-6 and 6-7" one at the L&S I ran. Plus a set of 8-20" stick
mikes. If your production requires that +/- .0005 measurment then they
are definetly worth the investment. The speed and accuracy they provide
can pay for itself.
Of course there is such a thing as getting spoiled with all the nice
tools :-) and if I was setting up my own shop I would have to look
pretty hard at the costs. I'm still kicking myself for not picking up a
set of tri-mikes years ago when my employer surplused a bunch of
measuring tools. I did get a quite a bit of stuff then (calipers 6 &12"
,6"depth mic, 0-4" mic set and 6&12" squares, rad gages) all digital
mics and calipers.

Mike Graham wrote:
In article , DoN. Nichols wrote:


So -- if you're not in a hurry, you might try tracking eBay for
the sizes which you need most.


I don't know what sizes I need the most. 8-) 6" today, 1" tomorrow.
Although we manufacture stuff, most of the time it's a jobbing shop making
one-offs.


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James P Crombie

Summerside Machinist
Prince Edward Island Amateur Astronomer
Canada 3D Designer

E-mail
Astronomy webpage http://www.jamescrombie.com
Rhinoceros 3D webpage http://www.jamescrombie.com/rhino/
Mirror Grinder page http://www.jamescrombie.com/pics/
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