Knob

Used in models:340, 755B, 550, 540A, 455D, 555, 655A, 340A, 340B, 555B, 750, 455C, 540B, 335, 555A, 4610SU, 532, 7500, 515, 755A, 2600R, 3910V, 531, 3600, 7600C, 6600, 4110V, 334, 4600SU, 3910R, 6600C, 4600O, 3910N, 2910, 3610, 2610, 2610V, 3910H, 3610V, 231, 3600R, 6700, 530A, 333, 7700, 3900, 3600N, 230A, 2600V, 5600, 4110O, 4610N, 3600NO, 2310, 234, 6600O, 233, 5700, 4110N, 4610NO, 4600NO, 4110NO, 4610V, 2600N, 3600V, 2810