I designed these mounts for the Andonstar microscope to be able to mount it to a TV Vesa style boom arm as I found the base of the microscope was too small for what I required.  I also designed it for a YouTuber (Joey Does Tech) to help him in making use of the microscope he has (AD407).

The main one which Scopr-mount.stl attaches to Scope-mount-vesa.stl with nuts & bolts.  It can then be attached to the tv boom arm (75mm).

The 2nd (Fantabulous_Curcan-Blorr.stl) attaches directly to the tv boom arm & uses the adjustable stand that you remove from the base & attach to this part.

The 3rd part (Scope-mount-lights.stl) is an optional extra for the scopr-mount.stl which is for wiring the led lights.