Mxsmanic wrote

I recall seeing, long ago, a sort of large knob on the pedestal of a
jet (I can't remember which kind) that, when turned, put the aircraft
into a coordinated turn ... at least if I recall correctly. No modern
jets seem to have anything like this. Am I imagining things, or did
something like this exist on earlier jets. I recall it being called a
flight director, I think, but the behavior doesn't seem to be like the
devices people call flight directors today.

Probably the autopilot manual turn controller.

Bob Moore