Originally Posted by bultaco
I don't see how you can get the exact heading since the difference in a couple of degrees is almost impossible to determine. However, when you already know the answer it's easy to position the marker and say it fits.
Like i said, i think the CRP5 with the windarm is actually a little easier for this kind of questions. But i really do get exactly 110/75 out of it, not even 111 or 109, sorry. Also make sure you start with the true hdg on top, and the GS under the grommet. You can do it another way, but it will give you a slightly different answer.
Like you said, if you really don't know the answer, you can always reverse the question and begin with the answers, but you will need to have some spare time.