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Q: Which of the following surveying chains provides the length in SI unit?
  • A. Revenue chain
  • B. Gunter's chain
  • C. Metric chain
  • D. Engineer's chain
Correct Answer: Option C - Metric chain (IS : 1492-1970)– It is the most commonly used chain in India. Metric chains are generally available in lengths of 5, 10, 20 and 30 m. Number of links per meter length - 5. Total length- 30m, 20m, number of link - 150, 100 , Per link length - 20 cm. Brass ring is provided at every meter except tallies place. This chain provides length in SI unit.
C. Metric chain (IS : 1492-1970)– It is the most commonly used chain in India. Metric chains are generally available in lengths of 5, 10, 20 and 30 m. Number of links per meter length - 5. Total length- 30m, 20m, number of link - 150, 100 , Per link length - 20 cm. Brass ring is provided at every meter except tallies place. This chain provides length in SI unit.

Explanations:

Metric chain (IS : 1492-1970)– It is the most commonly used chain in India. Metric chains are generally available in lengths of 5, 10, 20 and 30 m. Number of links per meter length - 5. Total length- 30m, 20m, number of link - 150, 100 , Per link length - 20 cm. Brass ring is provided at every meter except tallies place. This chain provides length in SI unit.