What is the accuracy of a six-digit grid?

A six-digit grid reference provides a specific location on a map with a high level of precision. In this system, the first three digits represent the eastings, and the last three digits represent the northings. Each digit contributes to the overall accuracy of the reference.

A six-digit grid reference can pinpoint a location within a 100-meter square. This means that the coordinates provided can identify a point that is within that square, reflecting accuracy that allows for effective navigation and positioning in both tactical and operational contexts.

The other options suggest greater distances than what a six-digit grid offers. For example, a four-digit grid reference would typically indicate a location within 1,000 meters, while an eight-digit grid reference would yield a more precise location within approximately 10 meters. Since the six-digit grid is understood to confer an accuracy of 100 meters, this makes the selected answer the most appropriate choice.