Hi, Been promising to get some of these made for a while now. Can't let on what they are for; you will have to be at Newark for that . Only got seven to sell, but they make an old lamp look well . Almost like a "good lookin kookin" appliance - Steve.
Newark is now past and several members guessed correctly. The adaptor is a riser tube to allow a Bialaddin lamp tank to be connected to a 2pint Primus type burner, thereby forming the basis of a "Bialaddimus" Frankenstove. I have one posted from a couple of years ago in the Frankies gallery. I have a couple spare if anyone is interested in making their own. PM me if you are. Steve.