Thank you to all who responded to this request, and a big thank you to Jason who has provided me with some details of various solutions.
The machine I am restoring is a Studer cylindrical grinder, this has been a long term project and nearing completion, since asking, I have been gifted two original looking oilers for the main grinding wheelhead spindle however, I still intend to make two more to replace the wick oilers on the workhead spindle.
I need to strip and refurb the original oilers and assess their condition so I may still have to remake those as well.
Gray