if anyone cares for a copy i have the specification as well as the 7 drawings to construct the white box like shelter used by the national weather service that is called a stevenson screen or a cotton region shelter.
it is used to shield the enclosed min and max thermometers as well as the wet and dry bulb thermometers from direct sunlight. the sides are made simular to the storm shutters on the windows of homes.
you may reach me at bobby_hamill@yahoo DOT com
just change the word "dot" to .