Last Updated
：2025/11/22
blow a backsight
（ present singular third-person ）
（ participle present ）
（ past ）
（ participle past ）
Quizzes for review
(surveying) To occupy a point, then enter the wrong point for the backsight, or forget to enter the backsight.
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blow a backsight
If you blow a backsight on this traverse, the subsequent elevations will be incorrect.
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If you blow a backsight on this traverse, the subsequent elevations will be incorrect.
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