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The Ordnance Survey began producing six inch to the mile (1:10,560) maps of Great Britain in the 1840s, modelled on its first large-scale maps of Ireland from the mid-1830s. This was partly in response to the Tithe Commutation Act 1836 which led to calls for a large-scale survey of England and Wales .
National Grid maps began to be issued after the war, but it was some time before there was full coverage. In the interim, the public were allowed to purchase War Office Cassini Grid maps. [1] National Grid maps at 1:25,000 scale (often referred to as 2 1 ⁄ 2 inches to the mile, or just 2 1 ⁄ 2-inch maps) were not introduced until as late as ...
Versailles on the Cassini map. The Cassini Map or Academy's Map is the first topographic and geometric map made of the Kingdom of France as a whole. It was compiled by the Cassini family, mainly César-François Cassini (Cassini III) and his son Jean-Dominique Cassini (Cassini IV) in the 1700s. It was on a scale of one line to 100 toises, i.e ...
In 1854, "twenty-five inch" maps were introduced with a scale of 1:2500 (25.344 inches to the mile) and the six inch maps were then based on these twenty-five inch maps. The first edition of the two scales was completed by the 1890s, with a second edition completed in the 1890s and 1900s.
The earliest cartographic reference to the hill is found in the 1837–1842 Ordnance Survey Ireland 6 Inch map, which can be seen on the Ordnance Survey Ireland website. In cartography, the hill was referred to as Carn Clonhugh, but by the time of the 2nd edition 1887–1913 Ordnance Survey Ireland 25 Inch map, that was replaced with Corn (a ...
Google Map interface; 1843 Ordnance Survey 6-inch First Edition Ordnance Survey: Scale 6 inches to 1 mile. OSI Mapviewer zoomable; 1848 Dublin. The General Post Office Directory Google Map interface; 1848 Environs of Dublin S. Orr and Co, Amen Corner, London Google Map interface; 1851 General Map of the Environs of Dublin and parts of Wicklow
Historic Maps Collection. 18th and 19th-century historic maps of Ireland. A UCD Digital Library Collection. Maps of Dublin accompanying Thom's Official Directory, printed by the Ordnance Survey for the Dublin publisher Alexander Thom from the six-inch map sheets 18 and 22, and dating from the late 19th century. A UCD Digital Library Collection.
PDF file including history and map of the Irish part and its links to Britain; Information and Maps on many aspects of Triangulation (& Levelling) in Great Britain "History Section - Corps History". Royal Engineers Museum. Archived from the original on 2006-08-29 – via Archive.org. "Major General William ROY (1726-1790)". Royal Engineers Museum.