This is a nice clean early 1900's 8" combination wrench marked "DELAVAL 4126" in good working condition, clean, very little wear, no rust, very little wear. The single opened end is 13/16". The other end is a 1/2 slot head screwdriver, in the center is a pin spanner wrench with .136" pins, 1.257" between centers of the pins. There is some rounding on the corners of the screwdriver noted. I've not seen this maker's name before, I assume this is a machine wrench, most likely a centrifuge or milking machine. Very nice overall! Ref: Schulz No. 1024 upper right corner.