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One of the following surveying instruments is used to set out lines at right angles...

Geography
JAMB 2022

One of the following surveying instruments is used to set out lines at right angles to the main chain line?

  • A. Optical square
  • B. Station pegs
  • C. Offset staff
  • D. Steel Band
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Correct Answer: Option A
Explanation

Using either the mirror method or the prism square method, the optical square is used to mark out lines at right angles to the main chain line.

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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