40° stand for better reading from the top glass with ventilation opening on the back, distance from the base for better data reading. Sized to fit into Bambulab P1P, P1S, X1.
Hygrometer model: Thlevel Mini LCD Digital
Amazon link (no affiliation): https://www.amazon.it/dp/B07XG2PTH8
The author marked this model as their own original creation.