Longines Wittnauer Watch Co. Vintage Collectible Longines Wittnauer Weather Key Instrument. Here is a very attractive vintage barometer/weather station from Wittnauer. It is in a round brass frame with domes glass front. It the background is very ornate with scenes of figures blowing wind and Greek face at the bottom. There are 3 dials, one is the Barometer, one humidity and one temperature. It will need to be calibrated for your location. Ne of a kind I’m sure. Size: 7 1/8″ across x 1 1/3″ deep. Weight: 1 1/4 lbs. This is missing a swing out stand that goes on the back. The label on the back says: Wittnauer Weather-Key Instrument. Made and Guaranteed by Longines-Wittnauer Watch Co. Overall condition is is good with some scratches on the paint on tha back. PLEASE REFER TO PHOTOS FOR DETAILS. The item “Vintage Longines-Wittnauer WITTNAUER WEATHER KEY INSTRUMENT BAROMETER” is in sale since Sunday, June 28, 2015. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “infiniti-auctions” and is located in Hackettstown, New Jersey. This item can be shipped to United States.