Electric tuners are easy to use and very accurate. Hold it to the guitar and pluck the high E. The tuner will tell you if the guitar is "sharp" (too high) or "flat" (too low). Pick each note and tighten the string to make it go higher, or give it some slack to lower it. Make sure the room is quiet when using a tuner because the microphone on the tuner can pick up other sounds.
The prize draw will be at noon PDT on September 4th, 2019. Winners will be contacted through the YouTube comments with instructions on how to claim their prize. Pedals will be shipped free of charge to any location worldwide - but winners are responsible for any customs or duty charges. No cash value. These pedals have no boxes, manuals, or rubber feet - but they do have history!