Abstract: Disclosed is a box that includes a base and a lid connected by a hinge including at least one hinge portion connected to the lid by a frangible connection configured to break during the first opening of the lid. The box includes a tongue extending from the lid and beyond the articulation axis, such that when the box is closed, the tongue extends toward the outside of the box from the lid while protruding relative to the hinge beyond the articulation axis, pulling on the tongue making it possible to open the lid by breaking each frangible connection, a lid portion of each hinge part remaining secured to the base and separate from the lid, in the protruding state.

Abstract: Automatic rain gauges (P00-P0n) are employed within the area of terrain (ZT). A meteorological radar (R1) provides, with a given radar periodicity, a radar image representing rain-bearing cells of concern to the area of terrain. By analyzing the succession of radar images, the main rain-bearing cells are tracked dynamically by their shape and motion. Then a radar rainfall measurement chart is compiled by accumulating, in each pixel of the area of terrain, the precipitations due, during a second chosen time interval, to these main rain-bearing cells, with interpolation of their shapes and positions. At least one sub-array (PA, PB) of four rain gauges separated from one another by about 2 to 4 kilometers and affected by at least one main rain-bearing cell is selected. Finally, the rainfall measurement chart is corrected at least partially as a function of the relation between the accumulated true rainfall data and those from the said chart at the locations of the rain gauges of the sub-array.