Turning Campanella
See the plain campanella.
Turning all the way around to the left:
Reverse - turning around to the right
Make a complete turn to the left or the right with each tempo.
Compasso doesn't describe or define the Campanella, but Caroso, Negri and Santucci do.
I find that this works more cleanly if you turn as far as you reasonably can early in the tempo (on the first beat, if possible), so you have plenty of time to complete the turn before the cadenza.
Campanella turning:
... spinning to the left ...
... and to the right ...
This takes one tempo (one bar in 6/4 or 6/8; two bars in 3/4 or 3/2) of galliard music; or two bars to complete a turn each way.
Katherine Davies, 2016.
The little bell, turning around.
12. Le campanelle in volta.