Which grid system is described as the least complicated?

• A. British Grid
• B. Transverse Mercator Grid
• C. Orthomorphic Grid
• D. Military Grid (UTM)

Answer: (C)

The grid described as the least complicated is the one that gives you a straightforward, rectangular lattice with lines that stay perpendicular and easy to read across the sheet. An orthomorphic grid does just that: it uses an orthogonal grid where the longitude and latitude lines map to right-angled grid lines, making the spacing uniform and the grid feel like simple squares or rectangles.

This simplicity is what makes it easiest to use. You can count squares and apply a constant offset without juggling multiple zones, central meridians, or special origins. In contrast, Transverse Mercator/UTM grids divide the map into zones with varying central meridians and scale factors, which adds steps to compute positions. The British Grid involves a local origin and datum considerations, and its conversions can be a bit more fiddly. So the orthomorphic grid’s regular, right-angle grid and minimal need for extra rules is why it’s described as the least complicated.