Double flageolet.

Technical description: ebony; 5 sections; silver keys and two cutters; 6 ivory ferrules, and studs between finger-holes; ivory mouthpiece; left-hand pipe has 7 finger-holes (top one containing ivory plug), no thumb-hole, and keys for D and D♯; right-hand pipe has 5 finger-holes, and keys for C (thumb, with wooden plug in key-hole), B and D♯; lowest `finger-hole' on each pipe may be intended as a vent hole; two-part wind-cap.; Nominal pitch: [G (three-finger tonic)].; Type or system: 5 keys.; Keyhead type: flat square, notched and chamfered.; Keymount type: ring/knob.; ; Usable pitch: sounding A₄ c|442|Hz (right-hand pipe).; Performance characteristics: only right-hand pipe working in present condition; [lowest six-finger note (left-hand pipe) sounds D₅].