![]() ![]() Because one is always measuring from the lower-left corner of the 100 km square, this ensures that a lower-precision grid reference is a square that contains all of the higher-precision references contained within it. Note that when going from a higher- to a lower-precision grid reference, it is important to truncate rather than round when removing the unneeded digits.Locating a point within a 10000 m (10 km) square Locating a point within a 1000 m (1 km) square These values represent a point position (southwest corner) for an area of refinement: Users determine the required precision, so a grid reference is typically truncated to fewer than the full 10 digits when less precision is required.Split in half, the first part (here 23371), called the "easting", gives the displacement east of the left edge of the square the second part (here 06519), called the "northing"), gives a distance north of the bottom edge of the containing square. ![]() This part consists of an even number of digits, in this example, 23371 06519, and specifies a location within the 100 km grid square, relative to its lower-left corner. This consists of two letters, the first West to East, the second South to North in this example, " UJ". 100,000-meter (100 km) Square Identification for regional areas. ![]() This consists of up to 2 digits (6-degree longitude UTM zone) for West to East, followed by a letter (8-degree latitude band) from South to North in this example, " 18S".
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