measure of sunshine

Sunshine: direct sunlight to which a given area is exposed.

sunshine recorder

Instrument designed to record daily duration of sunshine.

lower sphere clamp

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

The nut of the leveling screw, which tightens to secure the base plate in a given position.

leveling screw

Screw making it possible to level the instrument along its two axes, north-south and east-west.

lower support screw

sunshine card

Strip of paper, calibrated in hours, that is burned by the Sun’s rays; it registers the duration of sunshine.

base plate

Stationary metal support in the form of a triangle; it is comprised of three coupling sleeves, each having a leveling screw.

check nut

sub-base

Adjustable metal support that makes it possible to level the instrument by means of leveling screws.

glass sphere

In the manner of a magnifying glass, it concentrates the Sun’s rays on the sunshine card.

card support

Circular support for the sunshine card.

sphere support