[pianotech] Square Grand Jack Springs and Cords

[Ron Nossaman]

On 5/30/2012 12:33 AM, Joseph Garrett wrote:
> They are plated brass. They need to be a very specific gauge and diameter.
> Joe (the other one<G>)

Actually, they need to be a specific *strength* and diameter. Gauge 
would depend on the material used.

Ron N