** use grid lines and then estimate tenths of grid square
** across map 2 digits from gridline plus 1 digit estimated from grid, up map 2 digits from gridline plus 1 digit estimated from grid
** estimate precise pinpointing digits from map as tenths of the square (1/10's)
<blockquote>Spearhead this is Sparrow. Enemy at 355503. Over</blockquote>
* "MGRS approx" level of detail: 4 digits