Mentor-6623-1000-Analog-Turning-Knob-22-8mm-Mentor-6623-1000-p-This-analog-turning-knob-from-Mentor-is-a-digital-rotary-button-for-precision-potentiometers-Mount-directly-onto-the-potentiometer-spindle-p-Mentor-6623-1000-Analog-Turning-Knob-22-8mm