Technical Need a measurement,30-31 tudor bow

Alright I am getting some stuff done little by little. And I need another measurement.

Thanks to Kevin and his measurements I have my quarters getting close to square. And now working to square the roof and it's coming along somewhat nicely.

My next needed measurement is of the roof bow. My understanding is all of the top bows are the same down the roof line. Also that the bows are different between coupes and tudors.

So if someone has a 30-31 TUDOR roof bow would you mind sitting it on the floor and taking 3 measurements for me? I show which ones I need in the pic below. I plan on making mine out of thin wall tube.

Thanks guys !!

 

Morning bump !

 

A=41-3/4"
B=1-5/8"
C=1"

 

Thank you!

They are different then the coupes.

IF I remember correctly the coupes are 5/8" on C, 1-1/4 on B.

Again thank you !! Now I can progress a little more.