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 ...

Want to learn about other Google Maps tips and tricks? Check out how to blur your house on Google Maps and three Google Maps features you'll definitely want to know.

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 ...