I have this old Starrett 12" height gage that I like to use for layouts. Eyes are not what they used to be so I needed an assist.
Cut a slice of magnifier from an old Bausch and Lomb reading magnifier. I glued it to the vernier slide and there it is. Instant 2X
magnification. Much faster than holding up my little round magnifier to the scale.
No vintage tools were harmed in this mod.