If a gauge is installed perpendicular to the slope, its measurement is reduced by multiplying

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If a gauge is installed perpendicular to the slope, its measurement is reduced by multiplying Answer: cosine of the angle of inclination with vertical

Question context

This question is part of 🚧 Civil Engineering within the broader 🛠️ Engineering Essentials subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.