| 摘要 |
A monitoring unit for a measuring instrument (100) with a pointer (120) and a face (110), pointer (120) and face (110) having mutually differing reflection behaviors for light, comprising at least one first detecting means (210) with a light source (220) and a sensor (230), and at least one fastening means (250) for fastening the detecting means (210) on the measuring instrument (100), it being possible to arrange the detecting means (210) with the aid of the fastening means (250) such that the first sensor (230) can pick up light (228) reflected by the measuring instrument (100) that was emitted by the first light source (220).
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