small calibration object —
Founded small calibration object models & stl files for printing
NTrindade
Thorinair
rebeltaz
lukeskymuh
sotenck
whitemousegary
Pa1
MakerBlock
espr14
Innovaland 3D
sotenck
GuyFAmerica
TheNewHobbyist
Celta
CHAOSDRUCKER
Marc Fischer
Tesla3d
Val
3D-Muc
kwik