Thank you Humakt, that is really helpful.It's a home-made one. Google 'Nimblewill Nomad stove' and you can download the plans for free.
I made mine from stainless steel (a local sheet metal worker gave me some off cuts for free) so it doesn't rust (but was a right sod cutting all that stainless) and I made mine a bit bigger (mainly wider) than the plans. That's the beauty of making your own - you can tailor it to your own needs.
As an addendum I would say that, though I am pleased to have made it, I wouldn't do it again. Cutting that stainless really was a chore (and making it from mild steel seems daft to me - it'll rust like buggery after the first burn). But I made mine some time ago, before I'd heard of the Honey Stove. If I was looking for such a thing today then I'd buy the Honey Stove, hands down. People say the Honey Stove is difficult to put together. That's nonsense. A friend has one and it's just as easy/difficult to put together as the Nimblewill Nomad stove. They're both about slotting bits of thin steel together. So unless you have sausages for fingers and your idea of finesse is hitting everything with a big hammer I'd buy myself a Honey Stove.