I predict that the first company to design, patent and produce a potentiometer/DPDT switch assembly with an overall height dimension of no greater that 3/4 of an inch, will become the world leader in sales of said device. It shouldn't cost more than a couple of bucks each to produce and could easily sell for $20 each. That's a pretty good profit margin ! Here's how I would do it - I would make the pot part a little larger in diameter then . . . Make the switch part a little smaller, Then fit the switch part down into the pot assembly. WA - La ! CTS, China, are you reading this ? Get busy, get it done ! There's alot of customers waiting with "cash in hand" !