Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:6379385.
The idea by "jgennari" and "Caleh" to use the Fluke multimeter's probe mounts is cool, but my multimeter model and size is different. So I designed it in a way to be adjustable for any type and size.
The probe mounts on my multimeter are not perfectly parallel (see photos), hence the chamfer added on the left part to accommodate some rotation if needed.
Glue is not strictly necessary, it simplifies assembly and ensures a secure fit. The screws alone can hold the parts firmly in place.
When installed, there is enough space to insert the probes and cables between the mount and the multimeter (see photos).
I had to modify the DIN rail mount too, the holes orientation is changed.