The Sunwayfoto GH-PRO Geared Head (MKII released in 2017) offers a symbiotic relationship between a ball head and your camera
The GH-PRO Head allows you to perform micro movements. one step at a time on the X or Y axis.
This can even be done with both axes, if one of the Axis is fixed, which can be made even more precise.
Akin to the Arca Swiss D4, this is smaller but offers very similar functionality
Load Capacity: 5kg
Three dimensional Geared Head
Clamp Type: Panning
Max Load: 5kg
Bottom thread: UNC3/8″-16