I recently reconditioned this Stevenson screen that has spent the last 20 years or more in my backyard.
As far back as I can recall, I have always been a weather observer, and at the time that I built this shelter to house various weather instruments including the max/min analog thermometer and the analog hygrometer as seen here, I also built a anemometer as well as a wind-direction indicator, both wired to a readout hanging in my hamshack to round out my collection of weather instruments that included a wall mounted barometer (insert photo) as well.
The anemometer and the wind-direction finder array were positioned on the roof of my house for years, or at least until they were removed to install new shingles, and after 20 years of being out in the elements, they looked the worst for wear, and I decided to retire them.
Meanwhile this instrument shelter was originally located on the deck attached to the rear of my house, but with a new deck installed several years ago, the Stevenson shelter was removed for future re-installation.
Well wouldn't you know it, it took two years to do something with it, and here it is installed in a new location with a fresh coat of paint as well.
Just so you know, Stevenson screens are always painted white to better reflect the sun's rays. The louvered sides allow outside air to flow around the thermometers.
A Stevenson screen is always mounted with the door facing North, so not to allow sunlight to fall on the thermometers when opening the door.
In case you ever plan on building a Stevenson screen to house weather instruments, or the various sensors for your electronic weather station, and before you begin building, you should do your homework as to the required dimensions and where and how high to mount it off of the ground, aa well as how close the shelter is to surrounding objects and surfaces, as this is crucial to the accuracy of the weather instruments and/or sensors housed within.
The additional wireless electronic sensor seen mounted to the right of the analog max/min thermometer is for recording the max/min temperature and the readings are available on a wall display in my hamshack with a month's worth of hi/low daily temperatures saved in memory for refereeing back to.
In case you were wondering, possibly because most max/min thermometers in use today are electronic, and are reset on the display from day to day, the analog max/min thermometer requires a daily visit to the Stevenson screen, and with the use of the magnet stored in the shelter, the low and high indicating metal markers suspended in the thermometer tubes are re-positioned by sliding the magnet along the outside of the tube, pulling the markers up against the mercury located in the tubes.
Something of interest in regards to mercury filled analog thermometers, is the fact that they are only capable of indicating the temperature down to -40C, as the mercury freezes at that point.
Therefore for consistent temperature readings below -40C when using an analog thermometer, a alcohol filled thermometer capable of -70C readings before the alcohol freezes is required.
Both mercury and alcohol thermometers are available with a special mixture of their respective liquids for recording lower temperature readings, however this reduces the higher temperature rating of either type of thermometer.
For years I faithfully entered the weather observations that I made and recorded on a daily bases, filling 5 year weather diary's one after another over the years.
Making weather observations and recording them can become an obsession, and if for some reason I missed a day or two of entering my daily observations into my weather diary due to possibly being out of town, it was very distressing to say the least.
Today, with the electronic weather stations available, along with computers, this is no longer an issue, as they do the work for you.
Still, I enjoyed observing the weather and making daily entries into my weather diaries, and I believe that this is part of the reason why I still enjoy having analog weather instruments at hand, as they bring back memories of making daily visits to my Stevenson screen at the same time everyday to observe and record my backyard weather.
And of course let's not forget the clouds overhead, as any decent weather observer can make reasonably accurate weather predictions based on cloud behavior.
This requires being outside in the great outdoors, and it doesn't get any better than that.
Click on the photo for a closer look.....