This strange device has been in my room for a while and I have no idea how to read it. It was here when I moved back in. What does it mean? I can't look it up because I don't even know what it's called.
@hyperreal it is a barometer, it measures air pressure i think
@adriantepes Awesome! Thank you. Yeah I knew it had something to do with the weather and barometric pressure. My mom put it in here. I tend to be sensitive to barometric changes so this could be useful. I have to learn how to read it.