All one needs is an audible tone refference to tune the guitar.  As the two
tones get closer they cause a 'RING' which allows a semi skilled musician
to tune-a-fish.

Doug Sellner
Beach Tech
4131 Vincent Avenue South
Minneapolis MN 55410

Voice (612) 924-9193 x 521
Fax   (612) 926-1145

Internet: dsellner@embay.com