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Hence, 450 is a good estimate of the railroad’s average elevation.
Railroad’s average elevation
A railroad grade pocket watch exists absolutely a watch that was approved by a particular railroad organization for utilize by conductors on their rail.
Elevation stands distance above sea level. Elevations exist usually measured in meters or feet. They can be displayed on maps by contour lines, which connect points with the same elevation; by bands of color; or by numbers presenting the exact elevations of particular points on the Earth's surface.
Hence, 450 is a good estimate of the railroad’s average elevation.
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