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How to Measure Perpendicularity and Squareness

Measure squareness and perpendicularity by redirecting a laser beam 90 degrees with an optical device for precise alignment.



【 在 kylin2425 的大作中提到: 】
: 有光学大神吗？假如激光打光，能透过光判定垂直吗？
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修改:farewell2023 FROM 39.144.153.*
FROM 36.104.136.*