Mystery socket sizes?
I picked up a set of 1/2 drive sockets yesterday, vintage and i cleaned them up and sorted them for my mechanic displays.
So I'm sorting these and can't understand the sizes. Made in USA so I didn't write them off as some eccentric (but perfectly logical, no offence) British thing
As marked and then measured and tried on various nuts and bolts.
marked 1 1/16 = 1 5/16
1 5/8 = 1 1/4
9/16 = 1"
1/2 = 15/16
5/16 = 5/8
3/16 = 15/32
1/4 = 17/32
Any explanation?
|