Review on 🌡 Diameter of Ajax Scientific Aneroid Barometer by Walter Martin

Suitable for about half a mt. Also, a silicone ring is included if you want to frame it. So air pressure can affect it. Not as accurate as my old mercury barometer, but not toxic either. In addition, unlike a barograph, it does not require its own vibration-free, temperature-controlled room. Although I've always wanted a world class barograph. One that could detect comet/asteroid collisions like Tungusta.