Abstract
An anemometer housing design is described which utilizes readily available components. The unique feature of the design is the use of a magnetically activated reed switch set in an iron epoxy housing to provide indication of wind speed and yet maintain a low-threshold starting speed. The reed switch provides a positive off-on switch and requires only two wires. The response of this reed-switch anemometer is similar to that of photo-chopper anemometers having a starting speed of 12 cm sec−1 and a sensitivity of 0.026 rpm per msec−1.