small calibration object —

Founded small calibration object models & stl files for printing
Lockheed C130 Hercules
BigMacMachine
ProtoCity Hubs
PrototypeHubs
CaliDragon
McGybeer
Desk Organizer Tray
The3Designer
Aesthetic Wall Organizer
so_much_mirrors
Remote Holder V2
3d.Subzwari
Retracton Test
thenerdyreview