Negative bearing

[Ron Nossaman]

>
> I'm restringing a Steinway A (6'4") c 1925.  The bearing measurements are as
> follows:
>  
> Note #           80         60         40        22         10
> Front         +.030    +.018    +.012    .000      .000
> Back          -.018    -.012     +.006     .000   +.015


First, How were these figures obtained? Bearing measured from where to where,
by what method, over what span? And once again - what's the crown measurement
of the soundboard in these spots, and how does the original sound?

Ron N