Looks like it came from a weather station. Measures 20 overall , the glass is intact , not cracked.The item “1930s Lg. WEATHER STATION 15 CODO MANOMETER by THE MERIAM INSTRUMENT Co. A+A+A+” is in sale since Thursday, February 19, 2015. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is [...]