I have a set of 6 "Snap-On" gages marked:
MC-132-9-1 (1 1/4")
MC-131-9-2 (1 7/32)
MC-133-9-4 (1 9/32)
MC-135-9-3 (1 11/32)
MC-134-9-5 (1 5/16)
MC-136-9-6 (1 3/8)
These are flat steel gages about 2" X 2 1/2" with a cutout the distance marked.
They are all marked "Snap-On"
What are they used for?