Device for indicating the filling level of a container

[0023]For clarity, the same elements have been designated with the same reference numerals in the various drawings and, further, the various drawings are not to scale. Further, in the following description, terms referring to directions, such as “vertical”, “horizontal”, “lateral”, “under”, “above”, “upper”, “lower”, etc., apply to devices arranged as illustrated in the corresponding cross-section views, it being understood that, in operation, the devices may have different directions.

[0024]FIG. 1 is a cross-section view schematically and partially showing an example of a firearm magazine 100, and an embodiment of a device 110 for indicating the filling level of magazine 100, that is, of the number of bullets or ammunitions contained in magazine 100.

[0025]In this example magazine 100 comprises a container 101, for example, of generally parallelepipedal shape, intended to contain a plurality of bullets 103. Container 101 may be opaque or transparent. Further, the container may be made o