send me your email and i can get them to you
the slats can be obtained by doing a search for a manufacture that makes plantation shutters. they will be glad to sell it to you by the linear foot.you will need to ask for the standard flat slat that is 1/4 inch thick 1 3/4 inches wide and that the edges be rounded . the rounded edge is called a "bullhead" edge.
If you need them you can purchase the min thermometer (alcohol) or the max thermometer (mercury) and the sling psychrometer (mercury)from ...Kessler Thermometer Corp 631-841-5500. These are the exact same instruments the National Weather Service uses
hope this helps
I'm definitely interested. I have put off building a Stevenson screen all year....only have a little solo cup covering the thermometer now. I have seen some with little solar panels on the top of the screen that power a fan inside...is this something that would help to get more accurate readings?