This is a support for my metrica dial gauge to level the bed of a voron core xy 3d printer.
It is designed for the E3D Chimera 40mm Fan Adapter design by boohucky :
The 1.4 version use 30mm M3 screw. The first version (with no version number) is mount with 40mm M3 screw.
Thanks to @wywywywy for the design advises :D