| 摘要 |
The present invention refers to a system and a device (10) for alignment of at least one alignable plane with reference to at least one reference plane. Th e device includes a main part (11), a light source (18) and a number of contac t points (21a, 21b, 21c), and the light source (18) is provided to emit a ligh t beam (25) with a scattering angle in one plane.
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