Do you turn that simply by moving one of the little handles? Is there some friction-cam or indents or something that "locks" the table track into position at indexed intervals?
Yes... and that's what I like the most
about it... old fashioned simplicity.
The turntable is moved by the handles with no indexing, and with such a large flat surface to surface contact area, it stays exactly where you put it and doesn't shift around. They're another logical extension of a completely hands-on manually operated layout.
(hey, what do you expect for under $20?
I'm not sure yet, but I'm considering a point to point layout using them for engine turnarounds at each end. Combining a turntable with sidings and a runaround, you can pull the train in, uncouple the engine, run it around to the other side of the cars, then pull and push them onto various sidings, drive the engine onto the turntable, turn it around and then pull whatever rolling stock you want in the opposite direction. I have 4 separate old fashioned engine houses none of which are a traditional roundhouse, so the turntables can do double duty by selecting tracks to park engines in them.