And...
. . . . . . .
(Foursquares' column still.)
. . . . . . .
(Foursquares' pot still appears to a be well-maintained classic style with at least one, and what may be a second retort)
Please do not confuse this pot still with the Carl modified pot used by St. Nicholas Abbey (OP) that mount a column rectifier either on top of the pot, or next to it. A column rectifier can be recognized by multiple circular "windows" and distillation plates at each window level. A rectifying column provides multiple distillations in a single pass.
OTOH, Foursquare's is a pure and simple pot still and simply has a tall neck (no windows or plates). As you can see, the neck leads the vapor to either one or two retorts that further purify the distillate. Do not confuse a true pot still like Foursquares (or most single malts) with the Carl modified stills that include a distillation rectifier column.
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For the smartasses who noted the overlay on the second pic entitled "Pot and Column", this copy actually states:
"This is our pot still; the column still is so tall it protrudes through the roof and we built a special tower for it.
Pot and column
RUM SIXTY SIX Family Reserve is a blend of rums both from the column or “Coffey” still, for delicate nuanced flavours and also from the traditional copper pot still which infuses the rum with a more brash, robust character. The rum is put into small American white oak ex-Bourbon casks, which is an excellent wood for ageing and maturing. Most of our casks we buy from a famous distillery in Lynchburg, Tenn."
