Yeah...that really is kinda small and doesn't help much.
Anal probe??
Not sure but it appears to be an antique over the shoulder boulder holder.:-D
I'm going with wheel alignment probably for setting the camberHeadlight adjustment tool?
I actually considered that and searched those toolsBack in the day, I used one of those whatchamacallits to change the wooden spoke wheels on the old Dodge. I'm serious!