Nifty conversion between micrometer and center pin sizes

[Dave Nereson]

----- Original Message ----- 
From: "Andrew & Rebeca Anderson" <anrebe@zianet.com>
To: "Pianotech" <pianotech@ptg.org>
Sent: Tuesday, February 01, 2005 7:14 PM
Subject: Nifty conversion between micrometer and center pin sizes


> Hi,
> I'm plowing through my reference material to find that conversion and it 
> isn't happening.  Does anyone remember this off of the top of their heads?
> Andrew
>
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives
>

Multiply pin size by two and and ten  [#20 center pin X 2 = 40.  Add ten = 
50  (.050")].   Or working the other way, subtract ten from the diameter in 
thousandths and divide by two.

Similar for piano wire, but using 5 instead of 10.
    --David Nereson, RPT