a scale ranking ten minerals from softest to hardest; used in testing the hardness of minerals. Define DENSITY: A measure of how much matter there is in a given amount of space.
Jerusalem is a hilly city so the altitude varies but it is approximately 750 Meters (2,500 feet) above sea level.
Now, to calculate the elevation of the middle point, the height of the instrument (HI) is subtracted from the foresight reading of Rod 2. Elevation of middle point = 105 ft â 6 ft = 99 ft. The next step in extending the level line is to move the level to a new location between Rod 2 and the new point or benchmark.