Stevenson Screen Double Roof

The walls of the screen are double louvred and the floor is made of staggered boards.

Stevenson screen double roof.

However it is possible to construct a screen using other materials and shapes. The screen is made from top quality seasoned wood with double louvred sides a double layer roof and a floor of overlapping boards separated vertically by an airspace. Interior of a stevenson screen the interior size of the screen will depend on the number of instruments that are to be used. After comparisons with other screens in the united kingdom stevenson s original design was modified.

The world meteorological organization wmo agreed standard for the height of the thermometers is between 1 25 m 4 ft 1 in and 2 m 6 ft 7 in above the ground. The large stevenson screen is constructed in accordance with the wmo recommendations. The traditional stevenson screen is a box shape constructed of wood in a double louvered design. Double roof walls and floor of white painted wood provide screening and extensive louvres maintain adequate ventilation on all but the stillest days.

It may be padlocked shut. A stevenson screen screen is not called an instrument because it does not do any. Why does a stevenson screen have two roof layers with an air space in between answers. Why was the stevenson screen made of wood raised 121 cm off the ground have a double roof and have louvres.

The front panel is hinged at the bottom to form a door and is retained in the horizontal position by two chains. 3 the modifications by edward mawley of the royal meteorological society in 1884 included a double roof a floor with slanted boards and a modification of the double louvers. The author s design could easily be modified to achieve this by placing two gas vents back to back on each side. It was invented by the british engineer and meteorologist sir thomas stevenson 1818 1887 the father of robert louis stevenson.

A single screen may measure 76 5 by 61 by 59 3 cm 30 1 by 24 0 by 23 3 in and a double screen 76 5 by 105 by 59 3 cm 30 1 by 41 3 by 23 3 in. The roof of the screen is doublelayered with provisions for ventilation of the space between the two layers.