<P> Grid systems vary , but the most common is a square grid with grid lines intersecting each other at right angles and numbered sequentially from the origin at the bottom left of the map . The grid numbers on the east - west ( horizontal ) axis are called Eastings , and the grid numbers on the north - south ( vertical ) axis are called Northings . </P>
<P> Grid systems vary , but the most common is a square grid with grid lines intersecting each other at right angles and numbered sequentially from the origin at the bottom left of the map . The grid numbers on the east - west ( horizontal ) axis are called Eastings , and the grid numbers on the north - south ( vertical ) axis are called Northings . </P>
grid lines that are drawn in a north-south direction
grid lines that are drawn in a north-south direction
Northings
Northings