Here is a SUPER nice condition (close to NOS) W H Wilkinson hit and miss engine cylinder oiler. Wilkinson’s were made in West Medway Massachusetts. This oiler is defiantly a cylinder oiler with both a vent tube and the check ball. The thread size is 3/8. I think you would have a difficult time at best to find one in better condition Everything is correct and original. Please look at all of the pictures and decide for yourself, condition and IF you want and or need this oiler.