A clarification to my post 30946:
By "inner" and "outer" I meant from the perspective of the winding's schematic.? The wire between the HV taps and "B+" taps has higher resistance per volt developed than that between the B+ taps.? So the winding probably starts with the thinner wire and then switches to thicker wire at the first B+ tap and back to thin at the next B+ tap.? By "B+ tap" I mean the taps that go to the "L.V. RECT." anodes.? It's hard for me to call this "low voltage".
The resistance measurements do show the increase in wire length as the layers accumulate.
Halden VE7UTS
