Predictor is a versatile, accurate meteorological grade barometer capable of tracking air pressure changes in a functional and informative presentation. It is a must have for any home weather enthusiast. Dial shows traditional barometer nomenclature (displays “Rain”, “Change” and “Fair”), as well as measurements over a 3-inch scale of mercury (28.5″ – 31.5″). Accurate to ±0.16 inches of mercury. Can be adjusted to any elevation up to 6500′.  Precision German movement is displayed behind a cutaway dial. Re-settable pointer lets you track changes in barometric pressure.