Rush
device to facilitate fine tuning, attached to the end of the tuning pin
Stripped to expose the pith, it is attached to the end of the tuning pin, it facilitates fine tuning; If required, it can be cut, or replaced by a longer one; According to Garvin it "also helps to soften the tone of the regulators, thus preventing them from drowning the chanter".
Breathnach, Breandán: The Irish pipes. In: The bagpipes in Europe, 1 (1976), p.4.
Garvin, Wilbert: The Irish bagpipes: their construction and maintenance [Belfast 1978, Blackstaff Press]. Foreword by Breandán Breathnach. Kells, 1988 (2), p.20, 21*.