measure of sunshine![click to hear](/images/speaker.jpg)
Sunshine: direct sunlight to which a given area is exposed.
sunshine recorder ![click to hear](/images/speaker.jpg)
Instrument designed to record daily duration of sunshine.
lower sphere clamp ![click to hear](/images/speaker.jpg)
Two clamps secure the glass sphere into the position required to obtain an exact measure of sunshine; this position is based on the coordinates of the meteorological station.
lock nut ![click to hear](/images/speaker.jpg)
The nut of the leveling screw, which tightens to secure the base plate in a given position.
leveling screw ![click to hear](/images/speaker.jpg)
Screw making it possible to level the instrument along its two axes, north-south and east-west.
lower support screw ![click to hear](/images/speaker.jpg)
sunshine card ![click to hear](/images/speaker.jpg)
Strip of paper, calibrated in hours, that is burned by the Sun’s rays; it registers the duration of sunshine.
base plate ![click to hear](/images/speaker.jpg)
Stationary metal support in the form of a triangle; it is comprised of three coupling sleeves, each having a leveling screw.
check nut ![click to hear](/images/speaker.jpg)
sub-base ![click to hear](/images/speaker.jpg)
Adjustable metal support that makes it possible to level the instrument by means of leveling screws.
glass sphere ![click to hear](/images/speaker.jpg)
In the manner of a magnifying glass, it concentrates the Sun’s rays on the sunshine card.
card support ![click to hear](/images/speaker.jpg)
Circular support for the sunshine card.
sphere support ![click to hear](/images/speaker.jpg)