Digital images of 6, 25 and 50-inch OS maps for the whole of the UK from 1842 to 1952 are available online from the National Library of Scotland (uk/).
On that website, you’ll find map-based finding aids to help you find the relevant sheet numbers for the area in which you’re are interested.
IG Basemap Premium ie/findingmaps/Map Genie Note on Scale: Give the scale that the map was exported / printed at.
Note on Title: If no title exists create a short one and put square brackets around it.
So if you make an error of half a millimetre (one-fiftieth of an inch) in measuring on a 50 scale map, you will produce an error of 625 mm (about 2 feet) on the ground.
Another effect of map scale is that objects can appear to be much wider on a map than they are on the ground.
Land Registry is careful to point out that its title plans, based as they are on Ordnance Survey maps, show the Whilst Ordnance Survey maps enjoy a worldwide reputation for accuracy, it is very unwise to attempt to measure distances from them in order to scale those distances up and to set out on the ground the theoretical position of the boundary.
The construction of over 16,000 miles of railway track had made its mark on the physical landscape.
As shown in the examples below, the maps are at a variety of scales; these range from fairly small (2½-inches to the mile) to very large for urban areas (50-inches to the mile).
They show a wealth of local detail, which will enable searchers to investigate their history of houses, locality and changes to the countryside.
The East Sussex Record Office has just finished listing 7,961 OS maps; the list can be viewed on our online catalogue and the maps themselves are on open access in the Reading Room (although you’ll need to register as a user of The Keep to access this room).
This collection of maps (which includes 1,391 maps formerly stored at Brighton History Centre) was received chiefly from the Planning Department of East Sussex County Council, although nearly a thousand were recently sent to us from Hastings Library.