Stevenson Screen

A Stevenson screen is basically a white louvered wooden box. The Stevenson screen is white to reflect sunlight and has slats to allow air to circulate easily. The box is designed to contain some weather equipment like thermometers and barometers. 

                                    

The Stevenson should be placed above the ground and away from the buildings. The idea is for the weather instruments to take accurate readings of the air, rather than direct sunlight or heat from the ground or from buildings. 

A Stevenson screen, closed (left) and open (right), containing a resistance temperature device (thermometer) and a relative humidity probe.

Inside the screen we find the rest of the instruments which are thermometers.

Watch the following videos:

The Stevenson Screen