Historians stipulate that it was Leonardo da Vinci’s fascination with flight that inspired him to innovate the anemometer, an instrument for measuring the speed of wind. His hope was that, eventually, the device could be used to give people insight into the direction of the wind before attempting flight.

While da Vinci did not actually invent the device, he did make variations on the existing designed originated by Leon Batista in 1450 (da Vinci’s design was probably made between 1483 and 1486) so that it was easier to measure wind force.

Next to his sketches of the anemometer, da Vinci made the following notes: "For measuring distance traversed per hour with the force of the wind. Here a clock for showing time is required."

Da Vinci’s anemometer has an arched frame with a rectangular piece of wood hanging in the center by a hinge. When the wind blows, it raises the piece of wood inside the arched frame. Printed on the frame would be a scale. By noting the highest point that the wood reached on the scale, a person could measure the force of the wind.

Frequently Asked Questions About the Anemometer

What is an anemometer?

An anemometer is a simple instrument used to measure the speed of wind. People use it in weather observation, aviation, and any field where knowing wind strength matters.

Who invented the first anemometer?

The idea behind wind-measuring devices goes back several centuries, but a recognizable form of anemometer was developed in the 15th century by Leonardo da Vinci. He sketched a device that responded to wind pressure, and later scientists refined similar designs into practical instruments.

How does an anemometer work?

Most traditional anemometers use spinning cups or vanes. Wind pushes against the cups, causing them to turn. The faster they spin, the stronger the wind. Modern versions may use sensors or ultrasonic signals, but the basic idea remains the same: movement of air is translated into a measurable value.

What is an anemometer used for?

Anemometers help meteorologists track wind speeds for weather forecasts. They are used at airports to ensure safe takeoffs and landings, on ships to guide navigation, and by engineers testing buildings or wind turbines. Outdoor enthusiasts also use portable versions when planning activities.

How is wind speed expressed?

Wind speed from an anemometer is usually given in units such as miles per hour (mph), kilometers per hour (km/h), or meters per second (m/s). The choice of unit depends on the context and local conventions.

Are all anemometers the same?

No. There are different designs. The classic cup anemometer spins on a vertical axis, while vane anemometers include a propeller and directional tail. There are also hot-wire and ultrasonic models that use changes in electrical properties or sound waves to measure wind speed without moving parts.

Can an anemometer tell wind direction?

Some anemometers are combined with a wind vane to show direction. The wind vane points toward where the wind is coming from, while the anemometer part measures how fast it’s blowing.

Why are anemometers important in weather forecasting?

Wind speed is a key factor in forecasting conditions like storms, cold fronts, and heat waves. Accurate measurements help meteorologists predict how weather systems will move and change.

How do you read an anemometer?

Most models display a number that represents wind speed. On mechanical anemometers you often count rotations over time and calculate the speed from that. Digital units display the speed directly using built-in sensors.

Where might I see an anemometer in everyday life?

You might see them on rooftops at airports, weather stations, marinas, or even on tall buildings where engineers study how wind affects structures. Hand-held versions are also used by hikers, sailors, and outdoor sports enthusiasts.

For more information on Leonardo da Vinci’s anemometer invention, please visit:

Aerospace History: Leonardo da Vinci
Wind Vanes and Anemometers