Hygrometer Desk Stand

A hygrometer desk stand for the popular circular types of hygrometer that are easily available online. I discovered that there must be a few different types of these circular hygrometers available, some of which have a subtly different diameter for the body of the device, and the locating tabs are sometimes at different angles. I therefore decided to design my own from scratch so that I could control the precise dimensions. This model is known to work with the hygrometers available from https://