In a message dated 6/26/2008 7:04:10 A.M. Eastern Daylight Time, e4103s@yahoo.com writes:
Yes, U.S. power (assuming you are in the the States) runs at 60 cycles, so if you shut out all the lights in the room and plug in a small lamp and shine it on the flywheel while you turn the tuning pot, it should line things up at 440. Keep in mind, incandescent strobing is pretty quick and the dots on the flywheel are pretty far apart so you may need to adjust your eyes to see it. Pretty brilliant of them to consider this, although with the CMC-10's that were in many of these things, I'm sure they needed all the help they could get until the SMS's were made.
-Jack
Any florescent light makes it easy.