Here is the translation (shortened):
Photogrammetric scans of Heritage elements are not always placed at an accessible high level. Photos of the upper sides are annoying and complicated, and it’s frustrating when the model is unfinished. You can find solutions to raise the camera position, but commercial poles for photography are expensive and I did not find any over 3.5 m. Drones, cranes and mobile platforms are even more expensive, and you need licence, permits, planning…
So this is can be an easy and cheap solution.
All the components can be found at a reasonable price, and you only need a drill for the upper hole. The total budget is 45 € (plus 45 € for the WiFi connection, that has other utilities.
But most important: does it work? It provides a maximum height of 4.5 m. I have used it several times, getting good results for the faces that are facing up. So this “top advanced mega-future sofisticated technology device” can be useful for anyone in this situation.
Sorry for my English!