Here is a thread, and a link to another inside it, about "Bevel Angle" the formulas in there suppiled by our own math whiz Gugi can simply be plugged into google to find the actual angle... Although shavable edge angles vary quite a bit it would be fun to figure out what yours is at after you get done with the restore... Just for your info so you know where the geometry is with your razor...

http://straightrazorpalace.com/advan...-theories.html