Top: 11″x 11″ (rough octagon)
Base 10″ square (roughly)
A few observations:
Everything is pinned with nails. I don’t know if this was original or a sign of repairs. My guess is original.
The legs were likely made square, two-thirds were tapered and then the top third was worked down with a draw knife or spokeshave. Even after a previous stripping and sanding I can feel the facets of the draw knife.
It’s a really comfortable little stool.
I like the legs and intend to copy them in a future project.