What is a grid reference? A grid reference tells you where something is on a map. There are two parts to a grid reference: The 1st letter or number tells you how far across the map something is ...

Google displays a series of translucent white latitudinal and longitudinal grid lines over its 3-D maps in some versions of Google Earth. The feature is handy if you're looking to find the GPS ...

The Universal Transverse Mercator ("UTM") grid system is a locational device similar to latitude and longitude with great potential for precisely identifying historic sites in the U.S. and Canada. The ...