On the small end it is 0.755" in diameter and the big end is 0.885". The taper in the hub is 1,690" long.
Whats the actual diameter ? Does,nt look like more than 14 inch which is rather small for such type wheel.
I have an identical center section, no rim. Can't help with what it was from, my guess was a boat? I've started making a wood rim for no particular reason, just thought it would look cool.