Castor gauge recommendations?

2' carpenter's level with two screws/shims so to set on the tire bead surface of the rim....just the way any alignment machine does...

then tables to look up for various rim diameters to relate distance off dead level to degrees.....

:beer:
 
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Ok I guess I am the hillbilly here. This is the set up I use. I still need to add a digital deg gauge and a bracket 90deg off the back for self leveling on the floor but it is very cheap and makes toe measurements easy. I still need to trim them down a little smaller.

Here is the gauge I am looking to buy. I have been watching and waiting for them to go on sale. Then I will get two, one for each side to speed things up. http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=95998
 
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