Guitar Heads Check This Out.... Self Tuning Guitar.....

[Matt Beesy]

https://www.facebook.com/photo.php?v=811384355568596

 

[J Storm]

 

[Nochturnal]

Gibson and Epiphone are selling guitars with that on them, it's called Min-ETune. Not sure if you can buy it separately yet.

http://www2.gibson.com/Products/Min-ETune.aspx

 

[mangobob79]

Can't see it on my service, mad slow today, but they've been around for a while, Joni Mitchell the queen of alternative tunings had one custom made in the 90s