Would this wrench go to a piece of craftsman machinery, havn't seen one before.

Its 8 1/4" long and openings are 1 1/4"x 1 3/16" and is between 3/16 & 1/4" thick.

I have never seen a sears machine prefix on a wrench before. but, if that is in fact what that is, the prefix is for Harris (welding equipment), so perhaps it came with a torch set...

You keep that sucker under lock and key   lol  bob w.

love the old vintage tool so much history