Compass English

CONTOUR LINES

Contour lines are imaginary lines that connect places at the same height above sea level. These are recorded in brown on the survey maps. These documents appear to be closed curves. The height difference between the two adjacent contour lines on the survey map is 20 m. This is called contour interval. As the distance…

Compass

16 Points of a Compass

Boxing the compass is the action of naming all thirty-two principal points of the compass in clockwise order. Navigational compass No Compass point Abbreviation True Heading 1. North N 0.00° 2. North by east NbE 11.25° 3. North-northeast NNE 22.50° 4. Northeast by north NEbN 33.75° 5. Northeast NE 45.00° 6. Northeast by east NEbE…