How to "rough in" front end alignment after rebuild?

Yesterday I found a guy in town that supposedly specializes in old cars, and he came highly recommended, so I gave him a call. He's booked until June 20, so that's when my appointment is. I usually take it as a good sign when businesses have to book you days or weeks out. When I spoke with him on the phone, I asked if it would help if I brought specs for him, he said no need, the numbers are all in his head. And that he's been working on these cars since they were new.

I remembered that I bought this old thing and have never used it, but I'm uncertain as to how I'll mount it with my banged up dust caps...
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You remove the caps, most of those are magnetic, sometimes there are adapters needed between the tool and the hub. You snug up the bearing adjustment to remove play, and it normally "sticks" right to the hub. Make sure the hub is clean and without sand, grit, etc, or damage

If for some reason you want to sell that and we can agree, I would be interested