Antique Lafayette Wind Velocity Indicator Four Cup Anemometer Lucite Stand 8"

Description

Rare antique circa 1930's Lafayette Wind Velocity Indicator - H0 C1B 571. Green metal frame with glass front dial, four hemispherical plastic cups, horizontally mounted compass.Mounted for display on a lucite stand. Made in Japan.

"In meteorology, an anemometer is a device that measures wind speed and direction. It is a common instrument used in weather stations. The earliest known description of an anemometer was by Italian architect and author Leon Battista Alberti (1404–1472) in 1450. A simple type of anemometer was invented in 1845 by Rev. Dr. John Thomas Romney Robinson of Armagh Observatory. It consisted of four hemispherical cups on horizontal arms mounted on a vertical shaft. The air flow past the cups in any horizontal direction turned the shaft at a rate roughly proportional to the wind's speed. Therefore, counting the shaft's revolutions over a set time interval produced a value proportional to the average wind speed for a wide range of speeds. This type of instrument is also called a rotational anemometer." (Source: Wikipedia)

Condition

Good Overall - Gentle wear, some cracks to lucite, not tested.

Dimensions

5" x 5.25" x 8.25" (Width x Depth x Height)