This image can be found on an Adoption apron. Many adoption rituals refer to Jacob’s Ladder and the Tower of Babel, but this seems to be a combination of the two. Perhaps it is a reference to the ‘tower test’ (walking over a seesaw). Alternately, in some third degrees the Tower of Babel is actually climbed, so perhaps this is a third degree reference.

I have been scanning Adoption rituals to see if I would perhaps find another tower than that of Babel, but I haven’t found any so far. Adoption Masons were in one ritual were received: “Between the Tower of Babel and Jacob’s Ladder, and at the foot of Noah’s Ark.” (Adoption ou la Maçonnerie des Dames, 1783) Perhaps that explains why they are combined.
Then again, the Tower of Babel usually looks more like what we are used to the tower look like, so why would the tower on the apron look more like a ‘regular tower’?

Top: Women’s Masonic apron Late 18th century Paris, Musée de la Franc-Maçonnerie
Bottom: Adoption ou la Maçonnerie des Dames, 1783