calibration sphere —
Founded calibration sphere models & stl files for printing
john3volts3
D3Dorsett
TeachingTech
henryseg
jam513
Jack
lukeskymuh
sotenck
Ondřej Stříteský
Belfry
NOP21
Poxa
gwynbleidd
Triangle Man
Fredsena
whitemousegary
Pa1
MakerBlock
espr14
Innovaland 3D