Dolaďovací šroubek (m)
tuning device
Tuning device at the base of the chanter, used to adjust its lowest tone (the subdominant); I have seen Dudy with such bolts for every single fingerhole, though; NB: The origin of "šroubek" [small bolt] is clearly German ("Schraube").
Číp, Pavel & Režný, Josef: České dudy: výroba, zdobení, ladění [The Czech bagpipe: manufacture, decoration and tuning]. Rožnov p[od].R[adhoštěm], 1991, p.5.
➺ Číp, Pavel & Režný, Josef: Dudelsack: Bau, Verzierung, Stimmung [German translation of »České dudy...« (Rožnov, 1991)]. Frenštát p[od].R[adhoštěm], 1992, p.4 (Stimmschraube), 23 (➺ 1d), 24*.
ws (linguistics [➺ Dictionaries, &c.])