Bigsby Tremelo

The Bigbsy was the the first tremolo system to be installed on an electric guitar back in the early 1950’s. The Bigsby features an arm that is spring loaded and also has a pivoting metal bar. The strings are wrapped around the pivoting bar, when the tremolo arm is depressed or raised the string tension changes therefore changing the pitch of the strings. This Gretsch shown below has a rocking bar bridge which can me moved to adjust the guitars intonation.