Qaliper Question

Allan Gilreath agilreath@mindspring.com
Wed, 3 Sep 2003 09:30:11 -0400


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List,

 

Check the archives for "anvil micrometer".  We've had quite a discussion
on those in the past and I'm sure there's a ton of information on those
(Mitutoyo, Starrett, et al).

 

Allan

Allan L. Gilreath, RPT

 

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Jon Ralinovsky
Sent: Wednesday, September 03, 2003 7:54 AM
To: Pianotech
Subject: Re: Qaliper Question

 

Hi Alan,

You've discovered the limits of calipers.  I highly recommend buying the
micrometer - one of my machinist friends doesn't trust calipers for
accuracy, as it's too easy to 'spring' the jaws.  Check out MSC or Enco
for decent prices on good tools.  If you want something to carry around
with you, consider the Starrett can seam micrometer. 

 

Respectfully,

Jon

 

 

I don't own a micrometer. Maybe I should.

 

But my trusty caliper measures tuning pins, center pins, etc., very
nicely.

 

It's strings that give me trouble. I can measure the same string several
times and get 2-3 thousands differences in the readings. I think it has
to do with getting the wire exactly knowing perpendicular to the jaws
and then knowing how much to "squeeze" with the thumb roller ...

 

Anyone out there mastered the art of measuring strings with calipers?

 

Alan R. Barnard

Salem, MO

 

 

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-- 

Jon Ralinovsky
Piano Technician
Department of Music
Miami University
513/529-6548


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