Good times …
are coming when sunbeams hit the precision-grinded glass sphere and the rays are focussed. The stronger the sun shines, the more intensive is the focal point which leaves traces on the recording cards. Absolutely self-sufficient, the sunshine recorder reliably measures year-round the sunniest hours. The robust, non-corrosive, and easy-to-use device is employed in northern as well as in southern latitudes worldwide.
- easy to adjust by built-in box level
- nearly maintenance-free ? every now and then
use a shammy cloth to dust the glass sphere
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