"RM Young 05103 Wind Monitor 10A anemometer"@en . . "SDN:L22::TOOL1429" . "An anemometer with a four blade helicoid propeller and lightweight direction vane. Vane angle is sensed by a precision potentiometer. The propeller produces an ac sine wave that has a frequency directly proportional to wind speed. The instrument body is UV stabilized plastic with stainless steel and anodized aluminium fittings. The instrument mounts on standard 1 inch pipe. The 05103-10 is a standard model designed to interface with Campbell Scientific (CSC) data loggers and a variant 'A'. Wind speed accuracy is +-0.3m/s and wind direction accuracy is 3 degrees."@en . .