What is an anemometer and how does it work?

HoldPeak 866B Digital Anemometer Handheld Wind Speed Meter for Measuring Wind Speed, Temperature and Wind Chill with Backlight and Max/Min

DIY Weather Vane and Anemometer

How to Make a Cup Anemometer (DIY Paper Cup Anemometer) - Video - Wind and Weather Tools

Weather At Your School: Build your own anemometer

Types of Flow Meters for Different Applications

Difference between Different Types of Flow Meters - Inst Tools