Shelf Mount Copy Holder

I like very much this project https://www.thingiverse.com/thing:1677332, but I needed something mounted to the shelf, and with an additional degree of freedom.

As a fastening to the shelf, I used this clamp: https://www.thingiverse.com/thing:1673030

All parts were printed with 0,2 mm layer, 3 outlines and 50% infill.
Suports are needed for parts: bolt1.stl. bolt2.stl, spring_clamp1.stl and spring_clamp2.stl