Vintage Chicago Specialty Mfg Co Lock Nut Spanner Wrench Tool
Very little wear; looks good. Measures 12-1/2" overall.
This tool is from somewhere between 1940 and 1958. The Chicago Specialty Catalog from 1958 indicates that it had become a #3003, whereas the 1940 catalog picture is identical to the one I have for sale, with no manufacturer number. According to the catalog, "Fits practically all sizes of lock nuts for large strainers." Will ship either USPS Ground or UPS Ground, depending on shipping location. (1A)