A first for me

[Delwin D Fandrich]

----- Original Message -----
From: <kam544@flash.net>
To: <pianotech@ptg.org>
Sent: May 30, 2001 10:35 PM
Subject: Re: A first for me


> >...Don't trust those digital calipers. I have one as well -- a nice,
expensive
> >Mitutoyo Absolute -- and it's a great tool, but it doesn't take the place
of
> >a nice digital micrometer.
> >
> >Regards,
> >
> >Del
>
> I appreciate your input, Del, but I do find it strange you would say that.
>
> I also use a Mitutoyo, and just to verify its continued consistency and
> accuracy over the years, I measure on various occasions, and continue to
do
> so, the new replacement music wire against the old broken pieces of music
> wire, as I did on this particular B7 note.
>
> My memory says the readings have always been within +/- .005 tolerance.
>
> Since you are saying string size does not basically diminish, I guess what
> you are suggesting is to compare digital caliper readings against digital
> micrometer readings on music wire and I will find, on the most part,
> discrepancies...yes?
-------------------------------

Possibly. For whatever reason it can be some difficult to get consistent
readings from a digital caliper. There is much more flex in the blades, add
in a bit of twist and there you are. Now, if you're used to doing these
measurements and getting good results, then who am I to argue? It's just
that often when I get a reading that seems odd -- as this one does -- with
the digital caliper and go back and check it with my trusty old
(mechanically) digital micrometer the mic gives a different reading. I trust
the mic.

The other answer, of course, is that the stringer grabbed the wrong size
wire. They do still use 12 1/2 wire for some inexplicable reason.

Regards,

Del