73+ Caliper install

I am embarrassed to ask. I have searched both here and youtube.
I cannot get my head around how the calipers attach to the brackets.
Sorry for the silly question!
If you look at a lathe, the tool carriage and tail stock are machined to sit and travel along a pair of machined rails called ways.
Harrison 600 21" Manual Lathe - 21" Swing, 60" Bed, Multiple Chuck Options, 3" TS | Used CNC Engine Lathe - Revelation Machinery
Chryslers calipers and caliper mounts are machined much the same. The drawing in post #2 shows "ways". The mo you know. :)