Ordnance Survey (OS) is the mapping agency of Great Britain, providing detailed high quality maps of the country. First established in 1791, the Ordnance Survey eventually mapped Great Britain at a scale of one inch to the mile. Drawn on a larger scale than the final printed maps – two inches or six inches to the mile – these old maps show incredible detail.
In 1854 a scale of 25 inches was initiated, and by the end of the 1800s all cultivated areas were mapped at this scale, which showed every building in outline ground plan to a high standard of accuracy.
In our technologically advanced age, Memory-Map was the first company to licence OS map data to produce digital maps for outdoor recreation and their OS Landranger 1:50,000 and OS Explorer 1:25,000 maps look identical to the printed Ordnance Survey versions.
The main difference between the two map products is scale – the number of times that you would need to magnify the map for it to be the same size as the real world; or the number of times that the real world has been reduced in size to become the map.
The OS Explorer Map is at 1:25000 scale (so 4cm on the map equals 1km in the real world). It shows great detail of the area the map is covering including footpaths, rights of way, open access land and the vegetation on the land. This is the map you would use for your outdoor activities such as walking, horse riding and off-road cycling.
The OS Landranger Map is at 1:50000 scale (so 2cm on the map equals 1km in the real world). The map covers a larger area than the OS Explorer Map, but not in as much detail. You’ll still find footpaths, rights of way and some tourist information features on the map. While some of the detail is lost, such as open access land on this map – it is still possible to use it when out walking for navigation with your compass. This is the map you would use for days out or short breaks and even road cycling as a larger area is covered.
Using Memory-Map is the easiest and quickest way to get Ordnance Survey Explorer and Landranger maps onto your PC, iPhone, iPad, or Android device; turning your mobile into an outdoor GPS to make navigation safer, easier and more fun.