The touch is added alongside the low B natural key just above the low C touch. It enables the left thumb to operate the low C(sharp) key. This can be used to play a low C(sharp)/D(sharp) trill. This mechanism provides a better action than the auxiliary spatula. Unlike the auxiliary spatula, the touch of the auxiliary mechanism is usually connected with the low C key so that the low C key is closed when the low C(sharp) is opened.
Catalog Number: 27
Available On: 601, 660, 101, 201, I, II, III, & IV
Conflicts With: Auxiliary Low C(sharp) Spatula (28)