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Difficulty: EasyElementary Surveying Instruments and Fieldwork

During chain surveying, a field surveyor needs to mark the precise endpoint of each completed chain length along a baseline on the ground. Which of the following elementary surveying tools is used specifically for this purpose?

  1. Arrows (chaining pins)Answer
  2. B
    Prismatic compass
  3. C
    Abney level
  4. D
    Offset rod

Answer

Arrows (chaining pins) are inserted into the ground at the end of each chain length to keep accurate count of distances measured.
Arrows, also known as chaining pins, are standard chain surveying accessories made of heavy steel wire pointed at one end. They are inserted directly into the ground at the forward end of the chain to mark each completed chain length, allowing the surveyor to keep an accurate record of total distance measured.

Step-by-Step Solution

1
Identify the fieldwork task described in the stem.
The task requires marking the exact endpoint of each measured chain length on the ground during linear survey work.
Accurate distance counting in chain surveying requires temporary physical markers at every chain interval.
2
Evaluate the function of elementary surveying instruments.
Arrows (steel chaining pins) are carried by the leader surveyor and stuck into the ground at the forward handle of the chain when stretched, marking the point for tallying.
This prevents errors in counting total chain lengths and ensures continuity along the baseline.

Key Concept

Identification and primary function of elementary chain surveying accessories
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Topics

Elementary Surveying Instruments and Fieldwork

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