What the pot? or the stove?

that's the same pot in all the pictures - so how many I've owned would be "one"

the stove? what outside part - the windscreen? the bottom cup, the simmer ring? which "outside part" are you referring to..

Oh, you talking about the bottom of the heine can that is *under* the stove? it's yes the bottom of a henie can, it's the "lid" of the stove, and when operating it's the base, it holds the bottom of the stove off the surface it's on so that it both doesn't burn the surface it's on, and if the surface it is on is cold, doens't inhibit the stove from working (by making it harder to get the alcohol boiling)