مقياس الجهد، مخرطة الطاولة HiTorque

Finally got this installed and the speed control is much more precise than the old one, with a nice tactile feel at each step. The little circuit board was a direct swap, took about ten minutes.

The potentiometer spins smoothly and the board seated perfectly in the same mounting holes on my SC4. Took about twenty minutes to swap out, and now the speed adjustment is steady across the whole range instead of dropping out near the low end.

The replacement board fixed the jerky speed issue I was having—much smoother control now. Installed in about ten minutes and it's been running solid for a week.