With regard to the Piano Industry, go to the Piano Technicians Guild web site. It is a wealth of resources and growing daily. I will not attempt to duplicate any links that are there.
The Piano Technicians Guild Web Site
J. D. Grandt Bass Strings
Note: JD Grandt is a long time user of Pscale as and additional tool when
manufacturing Bass Strings. Accepts Pscale Data files.
James Arledge Bass Strings
Note: The web site indicates that they no longer accept Pscale data files.
This was because of too many measurement errors. If you supply them with
a high quality string rubbing marked with where you want winding
terminations and a wire size specification sheet, they will produce strings
to your requested specifications.
Stephen Powell Bass String - New
Zealand
Note: Stephen Powell is a long time user of Pscale as and additional tool
when manufacturing Bass Strings. Accepts Pscale Data files.
Pianos Inside and Out by Mario Igrec - An excellent new Service, Repair & Rebuilding Book. Also an excellent new approach to Action Touch Evaluation