actually said:

If you are going to measure the toe with a string, you may as well
forget about it. You can NOT get enough accuracy or repeatability to
determine if the toe is correct or not.

This is good advice that a string won't be accurate nor repeatable enough
for toe measurements.

Without pro equipment, to get
that granular in your measurement you NEED to extend your measurements
5 or 10 feet and measure with a goor steel tape measure, or extend the
displaced centerline accurately and measure with a steel rule.

This home-alignment howto shows camber in degrees and toe in both degrees
and in inches:
http://www.gnttype.org/techarea/susp...alignment.html

The really good news is that the author suggests 0 degrees of camber,
which, it seems to me on initial thought, should be the easiest of all
angles to measure.

Using
the simple tape measure will give you the total toe - which will be
double the specified toe per wheel, and will not tell you if you are
off-center.

That same article shows how to get the individual wheel toe:
http://www.gnttype.org/techarea/susp...ics/align3.jpg

Since this thread is all about practical advice, the great news is that the
article offered the following pragmatic recommendation of:
a. Zero degrees of camber for a street car
b. Zero toe
(or a smidge of toe of about 1/16" on each side for a total toe of 1/32")

Both those zeroes should be relatively easy to measure with shop tools, are
they not?