["Hand-held Wind Speed Gauge Anemometer Digital Average Wind Speed for Measuring Wind Instantaneous Wind Speed\n\nFeatures:\nCan be widely used in agriculture, forestry, environment, ocean, school teaching and other fields.\nThis instrument is a handheld wind cup anemometer with low power consumption design, LCD display, energy saving and clear display.\nThe instrument uses a new type of microcomputer technology with high sensitivity and fast calculation speed.\nThe five parameters of instantaneous wind speed, average wind speed, instantaneous wind level, average wind level, and corresponding waving height can be measured simultaneously.\nThis instrument has the advantages of small size, light weight, complete functions, low power consumption and convenient operation.\n\nSpecifications:\nItem Type: Wind Speed Meter\nMaterial: ABS\nSize: Length: Approx. 24.7cm / 9.7in Width: Approx. 9.9cm / 3.9in\nBattery Model: 3 x AA batteries shipped (delivered without batteries)\nFour, use method\nFunction for Key Description:\n1. A/B: Wind speed function for key, used to switch between (A) instantaneous wind speed and (B) average wind speed.\n2. C/D/E: Wind level power bear for key, used to switch between (C) instantaneous wind level (D) and equal wind level (E) corresponding waving height.\n3. HOLO: Lock function for key, used to lock the current measured value and return to the lock.\n4. ON/OFF: The power switch for key is used to turn the instrument power on and off.\n\nPackage List:\n1 x Wind Speed Meter"]