Stevensons Screen

by Fred Frankland
(Winchester Ca, US)

Not your average screen saver

Not your average screen saver

WHere Can I Buy Wooden Stevensons Screens??

Barry's Response - I don't know if you can, but here are some instructions on how to build one, have a look at this page. Good question, Fred.

That web page can be found here -

Meteorological instruments must be shielded from the elements. Direct sun gives false temperature readings. Rain and wind causes instruments to wear out faster than they would otherwise.

The box also needs to let air flow through freely. If that does not occur, the temperature inside, where the thermometers are housed, builds up rapidly during sunny weather and, again, readings are too high. Of course, it must be strong enough to withstand gales and storms.

The walls of the box usually have louvres, angled slats of wood or other material, to allow airflow. They place the instruments for official weather observation and recording purposes inside the box at a height of between 125 and 200 cm (4 and 6 ft) from the ground. We also place them a considerable distance from solid obstructions such as trees to keep data as real as possible.

Inside are devices for measuring and recording Wind speed and direction instruments must be outside of any shelter, usually 10 m (32') above the ground.

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by: Ram

This share on the Stevesons screen is really informative.

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