If you want to make multiple turtles move in a spiral evenly:
ask turtles [
you can use the right 1 and make a forever button and have the turtles spin in place
Also: tilt-up 1 or roll-left 1
Yup. Although right 1 may be too fast. You could always put in a wait .1 and then a right .5 and adjust if those are too fast or slow.
For your case, it would be
repeat 360 [ roll-right 1]
Depending on if you're in 3d or 2d a simple right "x" should do the trick