Co2-Transmit - computer (1) for calculating the in a predetermined period of time caused individually, the co2-Emission, with a plurality of parameters that influence and the result is to be entered, comprising two mutually parallel flat element (3, 4) with a substantially congruent base surfaces which in some areas, preferably along at least one common edge (8), connected to each other, or are fixed to each other; a plurality of flat, disk-shaped information carriers (11, 14), which is between the two substantially congruent planar bodies (3, 4) are retained, in each case about an axis (9, 10) so as to be rotatable, which the two base surfaces (3, 4) extends vertically, wherein each of the two flat element (3, 4) in each case one or more windows (20 – 25), whereby in each case, the view of a section of a lying under it, which is rotatable information carrier (11, 14) is released, characterized in that each axis of rotation (9; 10) is formed by two brackets, which, from a flat body in diametrically opposite directions about a path treben and transversely to their respective longitudinal direction of the folding edges are bent over in each case by 90° and a recess in the / the respective information carriers) (11, 14) and pass through the other side of the same / is again provided parallel to its original plane are bent back.
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