This is a quality scalloped tall and slender bell shaped lampshade frame for making a  tailored soft bodied lampshade.
 
Base diameter 14"
Slope height 14 1/2"
Top diameter 7"

Duplex fitting. You will need a shade carrier to mount this frame on a base. I suggest an 8" carrier which I sell among my other items.

This is a new and unused frame but is sample stock from a UK factory and has been stored for some years so will have scuffs/grubby marks/yellowing and may benefit from a light respray to the visible gimbles.