The Plomb / Proto Catalog Content Mapper.
Here is another analysis tool. In this tool, type in a model number to see when the item was listed in Plomb / Proto Catalogs. For example, if you type in 1214 (7/16" Combination Wrench), you will see that the first appearance was in the 1933 catalog. We are currently working on Catalog pages with Combination Wrenches, but will add all wrench styles next, then sockets / drive tools, then the remaining content of catalogs. Ultimately, this will expand to all other manufacturer catalogs but that will take a very long time to upload and tag correctly. The Plomb / Proto Catalog Content Mapper.