checking caster angle

what are some of ways are caster angles being checked with out a magnetic caster camber gauge or an alinment machine. back yard style.

Get an angle finder,they are like 5$.You can measure direct from the top ball joint or with a little math you can measure off the diff housing.

jeeptec said:

what are some of ways are caster angles being checked with out a magnetic caster camber gauge or an alinment machine. back yard style.

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You can't find the angle without a way of measuring it.
As suggested, get an inexpensive angle finder and then follow the instructions in the link below.
http://jeep-xj.info/HowtoAlignment.htm

With level spot, a tape and a angle finder, you can easily do you own alignments.