PRINT IT UPSIDE DOWN (obviously)
UPDATE 6 FEB 2019: V2 printed and working as I thought.
UPDATE 5 feb 2019: added a V2 Version with a different external
...Show more design. Same internal measurements
UPDATE: Version in the pictures: "FIMI A3" barely visible, so in the .stl I changed position under the FIMI logo and I doubled it size.
Measurements are ok, the casing doesn't force the gimbal when you put it on and preserve it from impacts and from accidental handling. Once fitted it's sturdy.
Last but not least: your drone can stand vertically...