screw_and_knurled_knobHole.stl by Aleph Objects, Inc. based on "G-Clamp" by Johann Joe is licensed under the Creative Commons - Attribution license

screw_and_knurled_knobStand.stl by Aleph Objects, Inc. is licensed under the Creative Commons - Attribution license

screw_and_knurled_knobStand_Offset.stl by Aleph Objects, Inc. is licensed under the Creative Commons - Attribution license

screw_and_knurled_knobStand_VertCenter.stl by Aleph Objects, Inc. is licensed under the Creative Commons - Attribution license

https://creativecommons.org/licenses/by/3.0/