Once a year I try to post info on how the US insignia should look. Seems July 4th week is appropriate for the red, white, and blue. This is for builders who need to make or paint their own insignia.

There is a correct way to draw them, and you will see we get it wrong most often. Only an issue for those who care about such details.
ARF maunufacturers rarely get the marking right. One or two high end suppliers do, but most don't so maybe this will help. (holding breath)[&:]

Copy paste, or try printing the pdf attachment at the bottom. This is one sheet. Challenge yourself and friends to see if your jet has it right. You don't need a dial caliper or ruler really.

For much more detail you can check my sticky thread over in the warbirds forum:

http://www.rcuniverse.com/forum/m_7824449/tm.htm

Cheers,
Chris