文件
Dartford, Kent
Details of this drawing are corrected in heavy black ink with crosses placed over incorrect field boundaries and communication routes. Red pecked lines form a grid over the drawing. These are triangulation lines, which the draughtsman used to plot features of the landscape. A characteristically straight Roman road is shown leading from Dartford. In the bottom right, the scale is recorded and area calculations laid out.
The British Library1799
1799