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Q: The letter 'm' marked on the tallies refers to __
  • A. Meter
  • B. Metric chain
  • C. Non metric chain
  • D. Mild steel
Correct Answer: Option B - Metric chain–IS 1492:1970 covers the requirements of metric surveying chains. • The tallies used for marking distances in the metric chains are marked with the letter 'm' in the order to distinguish them from non-metric chains.
B. Metric chain–IS 1492:1970 covers the requirements of metric surveying chains. • The tallies used for marking distances in the metric chains are marked with the letter 'm' in the order to distinguish them from non-metric chains.

Explanations:

Metric chain–IS 1492:1970 covers the requirements of metric surveying chains. • The tallies used for marking distances in the metric chains are marked with the letter 'm' in the order to distinguish them from non-metric chains.