Joysticks for PCB design that are better to use than classical mouse
I suppose there are some tools (joysticks or something) that professional PCB designers use instead of mouse for PCB routing.


Why? What's wrong with a mouse?

I've dealt with various PCB designers (the lab I worked for had about a half-dozen people doing it), and it was all done on PCs with mice.

Any PCB layout software will use a quantized grid of pixels, usually on the order of .001 inches or maybe less, and mice work just fine for dealing with such an array.