Just call any of the vintage gl*** vendors and order the gl***. They have templates for all of the old cars. I'm sure there is one listed in the index on this site.
thanks for the non "smart ***" answer.( from the guys that have never done it.) its tough to get the window right with new felts, and how tight to get them
Not a smart *** answer..just trust my own measuring..like you should do you note that one answer here says his measure different from side to side?
Mine ended up with a slight taper so measure top bottom and middle, also the gl*** guy can grind narrower if it is to tight error on the tight side.
Don't know if this is any help but when I got round to getting the gl*** cut for my Model A Pickup I made templates out of plywood first. Fitted it just like the gl*** with all felts in place then checked it would roll up and down freely. Worked great.
I too made luan templates. Gl*** was cut to same size and very close to same thickness. Worked great with the new felt
..... exactly, no matter how experienced and well meaning a person on the internet may(or may not) be, so long as you understand what you are trying to do, figuring things out yourself isn't a bad thing.
Order it from Chris blattie here on the hamb He will ship a full set for just over 300 Best deal intown