[A930Rocket]

We use to use a homemade device called a trammel bar (sp?). It was a device that lay flat on the ground but had two uprights with a horizontal pin point on them. We’d place foil tape on the center of the tire half way up off the ground and punch a small hole in the tape on both tires, roll the car forward a 1/2 revolution and use the trammel bar with one point in the hole of one tire and and make a new hole in the foil tape of the other tire. Measure the gap in the two holes gave you your toe in or toe out.

At least that’s what I recall. It’s been 35 years. 🤪