This is a pretty nice origina brass connecting rod oiler in the “0″ size. It is about 1 3/8 inches in diameter and about 2 13/16 inches tall overall. It has 1/8 npt pipe threads that are in great shape. The original cap is there which is often missing. It has some minor wear overall but has great original patina! The reservoir glass looks to be in good shape and after some cleaning and the addition of gaskets it should be ready to be used on your project. These small connecting rod oilers are pretty tough to find. It would be a nice way to top off any engine that needs a nice rod oiler. It would even make a great spare on the shelf. The pictures tell the story. You’ll like it. I can be reached at 262 573 193 1 if you’d like to talk about it.