Capos Clamp

Some articles on capos, clamp, capo:

Partial Capo - Introduction
... For centuries, guitarists have used capos to clamp across all the strings of the guitar, to raise the pitch of all the strings ... Only relatively recently have guitarists begun to use capos that only clamp some of the strings, and this is usually called a "partial capo," which offer similar types of options to guitarists as tunings, with drone ... Though you will most commonly find partial capos used in standard tuning, creating "simulated" open tunings, they are also used in combination with many different tunings, and ...