In 3ds Max, we can change the rotation increment value using its Angle Snap Toggle feature, which is very useful in hard surface modelling.
I can’t change the default 5 degree rotation increment value in Blender. Is there a way to edit it using a script or a plugin?
Okidoki
(Okidoki)
2
Welcome
,
hmmm it’s only 5 degree with CTRL and 1 with SHIFT-CTRL and free without modifier…
Thanks 
Unfortunately, I need a 15 degree rotation snap to quickly make precise low-resolution 3D pipes and railings
joseph
4
R > Axis (X, Y, or Z) > 15?
Okidoki
(Okidoki)
5
… meaning typing: RX(or Y or Z) 1 5 (maybe -) … 
joseph
6
you’re a better person than I, that was me being lazy 
Thanks, but the rotation is global only? How to rotate locally?