Hey, for tuning my guitar manually I follow the hold the 5fth fret down procedure e.g. holding down the low E at the 5th fret then comparing the sound with the open A. This procedure continues with the other strings. The string that is being pressed down is the reference point so for example if the open A sounds the same as the Low E when pressed down at the 5th fret then that means my A string is in tune. My question is, what is my reference point for the low E? If my low E is out of tune, how would I be able to know without checking my electronic tuner?[br][br]Thanks in advance! Hope that made sense.[br]Natasha :)