Whenever I am at a garage sale or flea market I always look for single wrenches that I dedicate to my machinery. e.g. toolpost wrench, milling vise wrench etc.
For years now seems like everywhere I go I seem to find the same wrench, and sometimes the only wrench. It is a double open ended wrench, short (6" ±) and heavy. Sometimes the only marking on it is the number "31" on one of the heads. Today I saw the same wrench. This time it is marked Vlchek, marked 7/8" on one end and 25/32" on the other. And, yes, the flip side of the 25/32 head has the number 31. What is this wrench? Why are there so many of them? Was this one of those giveaways 50-60 years ago when you went to the movies? Seems like every barn or ranch sale has one or more of these. Special farm tractor wrench?
Any ideas?
Thanks, Ivan Vegvary