FAQ: Working with maps

This set of FAQs covers using and understanding the different kinds of maps within the site. For further details of using the historical mapping please see the "How to use the map library" tab in the Historical maps part of the site.

• Q: What is the difference between a seamless map and an original map sheet?

• Q: What co-ordinate system do you use?

• Q: Why are the maps of Great Britain not straight?

• Q: How can I get copies of the map data?