Thanks everyone, since this old beast has over 300.000 km on the clock I thought I would set the toe in on the fat side at 3/32nd". which I've been told is .09375". plenty tight enough considering the worn rack end I just replaced resulted in 1/2 to 3/4" of slack at the right front wheel.

The following measurments are from this same post made at another site and may be useful on this subject.

1/16" = 4/64" = .0625"

5/64" = .078125"

3/32" = 6/64" = .09375