23ESA222MMF50NF Rotary Potentiometer, Spindle Operated, 2.2 kohm, 1 Turns, Linear, 400 mW. The 23ESA222MMF50NF is a single turn Spindle Operated Potentiometer with die cast metal bush and location lug, full special angle shaft style and carbon element. Power rating of 400mW and linear taper.