Even the original mouse was something of a hack, built form a block of wood, a button, and two encoder wheels. The wire exited toward the user’s wrist, making the device look like it had a tail.

So de Sa repurposed an old VCR, computer mouse, and camera lens caps to build an ergonomic jog wheel. With your own box of junk and some effort, you can re-create de Sa’s retro spinner. 1.

rerun your test using something with Avago (Pixart) 3310, 3360, 3366, 3989 etc, basically hiend mouse sensors aimed at gamers that will cry bloody murder when mouse has acceleration or is non linear.