The first shop I ever worked at used that very scope, or at least it looked just like this one. This was quite a long time ago now.
I'm just curious, does this one do the cylinder balance test? That was such a useful feature.
Thanks for the trip down memory lane, I loved that old shop.
Edit: Heck, I just realized you live in Seattle as did I at the time. Do you happen to know the history of that scope? There's a chance it could be the exact same unit! That would be crazy. (I live in Everett WA now.)