ICSE Class 10 Geography
Question 6 of 36
Interpretation of Topographical Maps — II — Question 6
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Question Question 6
What is meant by Bench marks? How are they represented on the map?
Bench marks are the permanent survey points shown by a stone or a building. They show the height of that point above sea level through accurate survey. The Bench mark is represented on the map as 'BM' with a number beside it. For example, 'BM 230 m' shows a bench mark with 230 m height.