| 摘要 |
An electronic image reader (9) is associated to a supply meter (1), for example a water meter, for measuring and displaying a measured value in an optically readable manner. This image reader is adapted for being positioned or guided in guide systems above an inspection window (3) of the supply meter. The image reader (9) is provided with an optical system, that includes a lens (7), which is adapted to the optical configuration of the inspection window and to the optical situation, in particular the geometric position of a display (2) behind the inspection window. The supply meter includes an identification mark (12), which is also located in the region of a guide system, namely guide rails (6.2, 6.3), and which is arranged relative to the guide system such that it can be read with the image reader without changing its optical system.
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