This is a gauge for Junker KV1-45-H45 drawer pullouts or similar versions (e.g. SO-TECH KV2)
It should fit for length from 400mm to 750 mm and covers the first two holes for the drawer (S) and the furniture body (K). This way its much easier to drill the holes for screwing the drawers and especially have always the same result for multiple drawers.
The other additional holes can afterwards be drilled when the pullout is already fixed on the drawer/furniture.
I designed the gauge to have a free space of 5mm below the drawer to make sure that there is enough room for final alignment and to keep airflow possible around the drawer.
There are two versions available:
To make it easy I just designed it for the right side and mirrored it in the slicer to fit for the left side as well.
How to use it can be seen in the attached pictures.
The author marked this model as their own original creation.