Front end alignment at home

But you still have to have the tool, right? That was my point. We had an OLD Bear mirror machine at the KMart Auto Center where I met Kitty years ago. It had the very caster/camber gauge you describe. It was archaic, but I liked it because it worked.

Well, no, you can MAKE a camber gauge as you pointed out. Once you have that you can "figger" caster

You can buy various kinds of digital levels at Lowe's / Home Dept etc. Biggest problem is either getting it "true" on the wheel or same on the hub