strings measures

[Stéphane Collin]

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Re: strings measuresThanks a lot, Ron.

St=E9phane.
  ----- Original Message -----=20
  From: Ron Overs=20
  To: Pianotech=20
  Sent: Sunday, May 18, 2003 2:17 AM
  Subject: Re: strings measures


  St=E9phane,


    Does anyone have a good trick for acurately measuring string =
diameters while still in the piano ?
    I normally use a micrometer on broken strings, but it is impossible =
to put it between the strings that are still in place.  I found that =
caliper measurements are not accurate enough for proper use.


  What you require is a multi-anvil micrometer. I have been using one =
for many years to measure the strings in the piano. It is particularly =
handy when you are dealing with a broken bass string, since you can =
measure the cover and core diameters of the adjacent strings in the =
piano without letting the tension off.



  The above image, of the Mitutoyo 117-101, 0-25 mm metric micrometer =
(they also make an Imperial measurement version), was taken from the =
Mitutoyo website at;


  http://www.mitutoyo.com/cat2000a/l-39.htm


  These micrometers come with a round and flat anvil. The round anvil is =
used for measuring tube wall thickness. They are more expensive than a =
standard micrometer, but you'll have it for the rest of your working =
life. My multi-anvil is a Starrett, but the Mutitoyo is better made.


  Best,
  Ron O.


--=20
_______________________

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  Grand Piano Manufacturers

  Web: http://overspianos.com.au
  mailto:info@overspianos.com.au
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