I'm working on a project and need the following:

531 straight gauge: Thickness and weight for a complete set
531 standard BD: weight for a complete set
531 SL: clear decal scan and weight for a complete set
531 C: clear decal scan and

I have literature that stating a frame could be made with Reynolds 5/10 or Reynolds 3/10. any ideas whats meant by that?

Any and all help is greatly appreciated....

Jim