Guides

Each guide goes with a tool. It explains the idea, works the numbers through by hand, and shows where people usually go wrong, so you can check an answer instead of trusting it.

• Guntha, cent, bigha and acre: land units explained

  What each land unit measures, how they all come from the acre, a worked example, and the land-record trap that makes 2.20 acres mean something else. Goes with the Area Converter.