Helped my friend set the toe on his race car with boards and tape measures... and just did it on the wife's Beretta after a tie rod change... but here's my question:
If the toe is say 1/8 toe in, where is that measured from/to? Front of tire to back of tire? The reason I ask is you're measuring between lines that aren't parallel, so if you use longer or shorter boards, you can change the reading... (Imagine using an 8 foot long board....)
And I assume that's why they now measure it in degrees because that "fixes" that problem. Of course, to convert that into inches means I have to dig up my high school trig, don't I?
Ray