A broken International Harvester or P&O farm wrench to be exact.
Neat :3 I love IH. I have a 1974 IH Cub Cadet 1450, my grandparents bought it new in 1974. I still use it to mow my lawn, and snowblow my driveway in the winter.. Doesn't burn a drop of oil, so I'm an IH fan. I was giddy when I found an IH beam-style torque wrench at a flea market for $1.00 :P
Of course, this piece of iron doesn't do me any good :P But, neat to know.
Broken, because it should have another tine on the end to the right?