Checkout Caster and camber

I've got an old Howe Racing version of that tool and have used it successfully many, many times for aligning street cars. I did build a bracket to mount it to various wheels from 13" to 20". I find it easier than using a digital angle finder. I have four 1/8" x 14x14 steel plate squares and I laid out 20 degree marks on two of them. I use the messy grease between them. I haven't used an alignment shop for forty years and my cars drive nice and get good tire wear.