help a beginner measure mc in wood with confidence

[jimialeggio5 at comcast.net]

> The stiff rib set and low panel 
>compression of an RC&S board will vary much less in unloaded 
>crown 

>Ron N

and loaded? even less?

--
Jim Ialeggio 
www.grandpianosolutions.com
Shirley, MA (978) 425-9026