If you mean a 'fold-over' type crank up tower, you might be close. If you mean a crank-up that nestles down inside it's self, stop while you're ahead, they are not Rohn 25 and they are not cheap. If I'm not mistaken, Rohn doesn't offer the fold-over in the middle type tower anymore. I would imagine because they were/are not simple by any means, and required much more than is typically though about.
Completely beside the point, a neighbor offered me a crank up 110 foot tower for a trade (won't say what the trade was). I took that offer and then made the mistake of telling him about what I'd been offered. Unfortunately, I didn't sign over a title before telling him and the deal was called off. Wasn't exactly thrilled with that, but I can certainly understand it! (Four zeros after the first significant number was the offer. No, it wasn't a factional number.)
Expect to pay for a fold over tower.
- 'Doc