Lincoln Service Parts 1 › Lincoln Electric 9SM28540 AIR PRESSURE GAUGE M28540 Lincoln Electric 9SM28540 AIR PRESSURE GAUGE M28540 Sale Price: $27.93 Original Price: $32.12 AIR PRESSURE GAUGE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! AIR PRESSURE GAUGE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1