Constructional details of survey chains Which of the following statements about a survey chain and its accessories is/are correct?

Introduction / Context:
Understanding the components and markings of chains is essential for accurate chaining and for avoiding systematic errors. This question consolidates several commonly examined facts about chain construction and accessories used in the field.

Given Data / Assumptions:

• We are considering standard chain design conventions.
• Tag numbering and total length are per traditional practice.
• Handles and swivels are part of the functional design.

Concept / Approach:

Survey chains include end handles whose lengths are accounted for in the overall designated chain length. Swivel joints at the handles prevent twist accumulation, ensuring the chain lays straight for measurement. Tagging at regular intervals aids in quick reading; the fifth tag from either end carries the number 5 to indicate 5-link intervals in traditional designs. A Gunter’s chain, rooted in imperial practice, totals 66 feet (100 links), enabling convenient conversion to acres and square chains.

Step-by-Step Solution:

Verification / Alternative check:

Survey manuals and equipment specifications describe these features explicitly for both metric and imperial chain systems.

Why Other Options Are Wrong:

Each individual statement is correct; selecting fewer than all omits valid facts.

Common Pitfalls:

Confusing tape measures with chains; overlooking that accessories form part of the standardized length.

Final Answer:

All the above