MOTM-510 knob part number
2007-06-28 by Paul Schreiber
The pointer knob used on the rotary switch is the Tyco part # 2-1437624-0. However, all of the distributors use the older ALCO part number: PKAP70B1/4 These are somewhat hard to find. If anyone needs this knob, email me. Paul S. making '510s