What scales are Cassini’s maps?
We have four series that were originally drawn at a scale of one inch to the mile, with others being added soon: the more detailed six inch to the mile maps will be the next. Since the late 1960s, small scale Ordnance Survey maps have been produced using metric scales (such as 1:50,000), rather than at the old Imperial scales (such as one inch to the mile): old maps and modern maps cannot, for this reason and others, be compared with any accuracy. We have therefore enlarged the historical maps so that they match the scale used by maps today. One inch to the mile, for instance, is equal to 1:63,360. The nearest present-day map in the Ordnance Survey Landranger, which is at 1:50,000. We’ve therefore enlarged the old one-inch maps to this scale. All our printed and folded maps (available elsewhere on this site) are at this scale. As well as making them easier to read, they’re also easier to compare. In Cassini Mapmaker, you can enlarge these still further if you wish. In the same way, the
