How precise is a 10-digit grid in terms of distance?

A 10-digit grid reference provides a very specific location within a grid square, indicating a point that is 1 meter precise. The first two digits of a grid reference identify a 100,000-meter square, while additional digits provide further subdivision of that square. Each additional digit narrows down the location by a factor of ten. Therefore, with a total of ten digits, you achieve a pinpoint accuracy of 1 meter.

This level of precision is important for various military operations and is essential for effective navigation, ensuring that personnel can find specific locations with remarkable detail. The other options do not accurately reflect the precision associated with a 10-digit grid reference, as they either denote larger distances or do not align with the method of calculating grid accuracy used in military mapping.