This is a four hole English pendant style ocarina.
There is a NEWER VERSION:
It was originally designed for printing in (unglazed) glass, considering its higher stiffness.
But it turned out that glass has too much of an uneven shrinkage to work properly.
The hole diameters where originally calculated for a tuning in F6 major.
The range is a full octave.
5.764 w x
2.174 d x
2.269 w x
0.856 d x