I've had this oiler for a number of years which I picked up from a trader who did Flea Markets/Car boot sales etc with much of his stock coming from house clearances owing to the owner passing away. All I know is that it's British, it's some sort of oiler and it's the only one of it's type that I've ever seen. I'm open to any suggestions as to what exactly it's intended application is other than it's an oiler. Clearly it doesn't fit in the Lee Enfield butt trap. Thanks for any help/info.