Inside this Stevenson screen are:  mercury thermometer, 7-day recording thermograph, and 7-day recording hygrograph (relative humidity measurement - and yes, it uses specially treated human hair as an accurate humidity device).  I had to build the weather box myself as the factory ones were way too expensive for what they are - a double ceiling ventilated box.  I also have a sling psychrometer for super accurate relative humidity.  More pictures later...