Geography
Give two points of difference between Bench Mark and Spot Height.
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Answer
| Bench Mark | Spot Height |
|---|---|
| These are marks etched on stone or a building to indicate the accurate height determined by surveys. | It refers to the height of a point on the ground above the mean sea level. |
| It is written as "BM" followed by a number. | It is represented by a dot followed by a number on the map. |
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