Question:

Which of the following is NOT a method of ranging used in chaining?

Show Hint

Methods of ranging: \[ \boxed{ \begin{aligned} &\text{Direct Ranging} &\text{Indirect Ranging} &\text{Reciprocal Ranging} \end{aligned} } \]
Updated On: Jul 27, 2026
  • Optical ranging
  • Reciprocal ranging
  • Direct ranging
  • Indirect ranging
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The Correct Option is A

Solution and Explanation

Concept: Ranging is the process of locating intermediate points on a straight survey line. The standard methods of ranging in chain surveying are:
• Direct ranging
• Indirect ranging
• Reciprocal ranging

Step 1:
Identify the recognized methods. Direct and reciprocal ranging are commonly used depending on the visibility between end stations. Indirect ranging is also recognized when direct ranging is not feasible.

Step 2:
Identify the incorrect option. "Optical ranging" is not a standard method of ranging in chain surveying. Hence, \[ \boxed{\text{Optical ranging is NOT a method of ranging}.} \] Therefore, the correct option is \[ \boxed{(A)\;\text{Optical ranging}.} \]
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