Double flageolet. Nominal pitch: E♭ or E (three-finger tonic).

Technical description: Ebony; 6 sections; silver keys and 2 cutters; engraved silver ferrules; ivory studs and mouthpiece; left-hand pipe has 6 finger-holes (top one containing ebony plug), and keys for D, F and D?; right-hand pipe has 4 finger-holes, and keys for C (thumb, with ebony plug in key-hole), B, F and D?; both pipes have a vent-hole on the lowest keymount (that on the LH pipe may also act as a finger-hole, giving a note between C and C?); high C key on head section above pipes, played by L1; three-part wind-cap. Keymount type: ring/knob. Keyhead type: flat square and octagonal, notched and chamfered.Technical description: Ebony; 6 sections; silver keys and 2 cutters; engraved silver ferrules; ivory studs and mouthpiece; left-hand pipe has 6 finger-holes (top one containing ebony plug), and keys for D, F and D♯; right-hand pipe has 4 finger-holes, and keys for C (thumb, with ebony plug in key-hole), B, F and D♯; both pipes have a vent-hole on the lowest keymount (that on the LH pipe may also act as a finger-hole, giving a note between C and C♯); high C key on head section above pipes, played by L1; three-part wind-cap. Keymount type: ring/knob. Keyhead type: flat square and octagonal, notched and chamfered.