Antique/Vtg Wittnauer Longines Watch Co. Weather Key Instrument Barometer 2 Side. I’m not an expert on barometers… This is a vintage (not sure of the age) Wittnauer/Longines double sided barometer. In good to excellent. This piece measures approx. 5″ tall x 4.5″ tall. The item “Antique/Vtg Wittnauer Longines Watch Co. Weather [...]