This one is in very good shape, no problems. I have seen them called a jointer gauge, or a jointer fence or a jointer gage. This one is a Langdon and is in good working order with everything t Center knurled knob is marked LANGDON MITRE BOX CO. MILLERS FALLS MASS.. About 90% japanning. This is a nice user. As a user I prefer this to the Stanley 386. I think the mounting is easier, and it fits a smaller plane as well as a jointer. Feel free to email any questions that you may have. Check out my other auctions for more tools.