Pete, all these sticks worked on the same principle:
For the elevators, it was rather simple: schematically you had 2 cables that run parallel to the longitudinal metal axle (one over and one under) when the stick was pushed forward, the upper wire was pulled and made the elevator rise it , and when the stick was pushed, the lower wire was pulled and depressed the elevators.
For the ailerons it was much more complex: its rotation once again acted by pulling cables that acted on articulated metal bars and further cables till the movement reached the ailerons pulleys.
Look at this drawing of the stick of the Ansaldo A-1 (the SVA were similar):
The metal perforated piece d acts as a de-multiplicator for the stick movements concerning rudder wires.
The metal pieces n and m act on the aileron system
and this is the double command stick system from the SVA10
In spite of the bad quality you can recognize the very same elements
The throttle mesh includes 2 levers: the larger one is a throttle, the second is a fuel mix command.