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How to score full 20/20 on Section A Toposheets: 4-figure and 6-figure grid references, contour intervals, scale conversions, and drainage patterns.
Topographical map reading carries 20 compulsory marks in ICSE Geography.
Read the Easting first (the vertical line to the left of the feature) and estimate tenths; read the Northing second (the horizontal line below the feature) and estimate tenths. Always write Easting before Northing.
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