A 1930's Short and Mason Stormoguide. A gold standard barometer as described in one of their original ads
“The “Stormoguide” makes a fine present - The “Stormoguide” is more than just a barometer. Its specially marked dial enables future weather conditions to be determined with accuracy, at a glance. The “Stormoguide” is made by Short & Mason, the famous precision instrument makers whose range of 20 different “Stormoguides” and barometers, is on display now at your jewellers or opticians.”