[pianotech] Yamaha C7 scale

[Ron Nossaman]

>   Don't forget these are metric wire sizes. The size listed will be a 
> 1/2 size larger or smaller than standard sizes. I forget right off the 
> cuff. I think adding a 1/2 size to the stated number makes them the 
> correct diameter.
>     * Ron N..hey... didn't' you post these wire sizes once upon an 
> e-mail? They are different than standard*.

I have, at least twice, as have others another half dozen 
times. Doesn't anyone save this stuff? The 13-1/2 metric is 
about 0.0005" smaller than our "standard" of the same gage. 
The difference increases by about 0.00001575" per half gage so 
20 gage metric is about 0.000709" smaller than our standard.

So substituting a #20 Mapes for a #19 metric increased the 
diameter from 0.04232" to 0.045", or from 1.075mm to 1.143mm.

Ron N