Adjustable Hygrometer Stand - Display

I put together a quick and easy display stand for these hygrometers I have been using. All that is needed is an M3 50mm bolt and nut (as the hinge).

As far as I can tell, the size of the hygrometer is pretty standard, but The ones I have are:
https://smile.amazon.com/gp/product/B07GNMKYCZ - Veanic 4-Pack Mini Digital Electronic Temperature Humidity Meters