[BRENT in 10-uh-C]

I think those gages are very outdated, and WAY too troublesome. At the shop, we use 'Toe Plates' to set the toe-in measurement because it is super fast. (Google them.)

We carry a set in our race car trailer to use at the track, and many pro racing teams use them to set the alignment on their competition cars. They are THAT accurate.