Vintage Ohio Cultivator Co Wrench-stamped OHIO on one side of the wrench. the stamping is at an angle, the last letter O is only half visible. The wrench looks to be in good shape showing paint loss and some rust. the wrench measures 7" long. the openings measure 5/8 and 11/16". this can be seen in PT Rathbones book vol 1 page 357-you will see in the book that the stamping on that wrench is also at an angle.