Known as the World's Oldest Barometer, this elegant teardrop shaped glass weather forecasting instrument indicates potential weather conditions up to 12 hours in advance. Low atmospheric pressure pushes the water level up in the spout, indicating stormy conditions ahead, while high pressure causes the water level in the spout to drop, predicting fair weather to come. This unique instrument includes a brass bracket and screws for mounting on a wall.
Size: 3.75"Wide x 4"Deep x 13"High 
; "Weather Glass Anchor Bracket")