Old brass Clayton and Lambert blowtorch or welder, or whatever it was designed to set fire to. I have no idea if this thing works, and you probably really shouldn’t be using it anyway with the innovations in tools and torches from then to now, but if you do fire it up make sure to post a pic in your feedback. Take a look at the photos and video, and if this is a piece you want to come live with you, leave a bid and if you win it will be sent out promptly. Enjoy!