Shubb C7B Brass Partial Capo for Acoustic / Electric Guitar
Can be placed on either side of the neck, skipping the outside string and frets the next three, either 2-3-4 or 5-4-3 (emulating DADGAD tuning if placed at second fret low E side).
Approximate length of pad for available string coverage is 3/4 inches or 19 mm.