Stratus Precision Rain Gauge with Mounting Bracket (14" All Weather) QUALITY: The last rain gauge you'll ever need to buy. PRECISE: Accurate to 1/100th of an inch and easy to read. Built to US Weather Bureau standards. EASY TO INSTALL: Install the rain gauge on a post with its exclusive "Quick Connect" bracket, which lets you quickly remove the cylinder for easy measurement or cleaning. RUGGED: Constructed of heavy duty, UV resistant polycarbonate (no metal parts to rust), this high quality rain gauge will stand up to years of rough weather and full sun without fading or corroding. Heat and frost resistant. VERSATILE: The first inch of rain funnels through the 4" diameter top into a specially calibrated measuring tube. Even a light shower registers clearly in increments of 100ths of an inch. Additional rainfall up to a total of 11" is contained in the outer cylinder until measured separately in the calibrated tube.