AGA Class 1A crown angle specifications?

[ianchang1]

Hi All,

I''ve noticed that on Pricescope a crown angle of 34 degrees is considered desirable, and some say this falls within the AGA Class 1A specs, but I''ve seen some AGA grading charts that define a Class 1A crown angle as between 34.3 - 34.7. Can someone please elaborate?

 

[oldminer]

The AGA 1A is 34.0 to 34.7 degrees. There should be no other AGA charts showing a different set of angles for 1A.

 

[ianchang1]

I guess it must have been a misprint then. Anyhow, thanks for your clarification.