Lincoln Service Parts 2 › Lincoln Electric 9SS27185-3 POTENTIOMETER KNOB - RED S27185-3 Lincoln Electric 9SS27185-3 POTENTIOMETER KNOB - RED S27185-3 Sale Price: $9.19 Original Price: $10.57 POTENTIOMETER KNOB - RED PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! POTENTIOMETER KNOB - RED PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1