I've found that a laser cutter tends to be more precise than a 3D printer so I made the flat portions of this tool with a laser cutter and added a ruler to them. I'm not re-uploading the fasteners since DEL_1979 did an excellent job on those and there's really no reason to change them. Go grab them from the original design.
If you're planning on painting the ruler (as I did) leave the paper on your acrylic, paint it, and then peel the paper. It's free masking and who doesn't like free things?
The author marked this model as their own original creation. Imported from Thingiverse.