CRT monitor's flat screen's flatness?!

[ne3A1wAys5]

how to determine it is as flat as LCD?

by removing the cover & frame of monitor?
heard tt inside screen cant be flat?!

 

[Le Québécois]

Use your eyes....
Apparture grill monitor are normaly perfectly flat.
Shadow mask one are almost flat ( to be honest...nobody see that my SyncMaster 757MB isn't flat except me ). With the exception of LG Flatron..those a perfeclty flat.