This rain gauge from Lidl has no way to mount anywhere. It has only 4 M3 holes on bottom of the gauge, so I made this holder on the pole.
You need 4 M3 screws and nuts to mount gauge to the holder and 2 M5 quite long screws with nuts and washers to tight the holder against pole. Exact lengh of the screws I don't know because I used what I found at home :D
I printed this with a 0.4 nozzle at a 0.25 layer height and PETG.
Weather Station : https://www.lidl.cz/p/auriol-bezdratova-meteostanice/p100333107
The author hasn't provided the model origin yet.