I'm certain some people do. At least in the sense maintenance, cleaning & such. For the smaller stuff such as a mic with worn out threads it may not be worth it.
At one time Starret had a calibration / repair program, I would imagine that they still do.
An interesting aside here, working in the optics industry requires the measurement of radiuses to rather high precision. However you need to be able to do that in an economical manner. Those measurements were often done on "lower cost" interferometers with rather run of the mill slides and glass scales. The software would scan the radius in question; then take the data and compute the actual radius by fitting a curve and using the peak value of that curve. This worked surprisingly well.
This might not be all that useful for flat surfaces. However it might be useful in coming up with a correction factor for mics that can't be fixed or tuned otherwise. That is to use a set of precise Gage blocks to come up with a slope function.
There is one other problem though. Once you start to try to get measurements below a thousands of an inch you really need to start to consider thermal and physical factors. Everything needs to be stabilized temperature wise to even bother with a calibration effort.
David A Frantz
websterindustro4at4mac.com
Sent from my iPhone.
On Jan 24, 2011, at 10:09 AM, Rick Sparber <rgsparber@aol.com> wrote:
> I wonder if anyone rebuilds the better mics.
>
> Rick
>
> -----Original Message-----
> From: gingery_machines@yahoogroups.com [mailto:gingery_machines@yahoogroups.com] On Behalf Of keith gutshall
> Sent: Monday, January 24, 2011 7:25 AM
> To: gingery_machines@yahoogroups.com
> Subject: RE: [gingery_machines] new article: How Accurate is Your Micrometer?
>
> Hi Rick
> You are right about not beeing able to do any thing about the cheap mic,
> except buy a better one $$.
> If it is off 0.0002 ,for most hobbist work ,I would not worry about it.
>
> Keith
>
>
>
> ------------------------------------
>
>
>
>
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