This overly designed tuning/dialing knob would be made from high-impact plastic with back-lighting for indicator symbols. This particular model would work best for medical equipment, but would work well for radios and test equipment.
Called a "spinner knob", quick dialing would be performed using the "finger dimple" (indented cup). Without moving your hand to other controls, precision dialing is performed by applying downwards pressure on the knob. This interlocks control of the tuning mechanism into a reduction gear/flywheel assembly that slows the physical movement of the knob and adds resistance to it's rotation. The golf ball inspired dimpled palm pad and the knurled side indents allow for controlled grip during precision actuation.

Yes, the render is quite hideous with it's 1980's look and the description is actually humorous, but as you can see from the MoI screen-shots this model was an exercise in the use of G2 Blends.
Additional blends were used to fix inconsistent edges. Two sets of Flow operations were used with the dimpled pad set composed of a doubly-applied Flow.