For sale the top section to what we think is a Dempster windmill tower. Don't have the exact measurement, but it's 12 or 13ft tall. Part number cast into the plate at the top is 3574. $100 CASH. Shorten it and make a sturdy base for a mailbox. Located in Tribune, Ks. 67879 E mail me via NexTech e mail for my cell number.