Based on an original by Heinrich Grenser dating from around 1800 (Musikinstrumenten Museum, Berlin), this is a representative orchestral flute from the Classical period.
Normally with one key, it can be supplied with more keys as desired.
Available materials are boxwood (with pearwood as a more practical and slightly less expensive substitute) and grenadilla, with imitation ivory joint rings. Keys are brass with boxwood or pearwood instruments, silver with grenadilla.
The standard pitch is A430, though modern pitch can be specified.
design could also be adapted for use in Irish music, perhaps with less
ornamental turning and a somewhat "modernised" embouchure hole.