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A graphical or bar scale. A map would also usually give its scale numerically ("1:50,000", for instance, means that one cm on the map represents 50,000cm of real space, which is 500 meters) A bar scale with the nominal scale expressed as "1:600 000", meaning 1 cm on the map corresponds to 600,000 cm=6 km on the ground.
The maps were published at one inch to the mile (1:63,360) using the Ordnance Survey One Inch 'Popular Edition' (the 4th Edition) as the base. Publication of maps and reports began in 1933 and was completed in 1948 after interruption by World War II, though sheets were published in every year from 1933 to 1948 with the exception of 1941 (Stamp ...
From 1774 until the 1820s, the grand juries of 25 Irish counties commissioned maps at scales of one or two inches per Irish mile [14] [15] but the County Mayo maps (1809–1830) were surveyed and drawn by William Bald in English miles and just rescaled to Irish miles for printing. [16]
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.
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.
1944 one inch to one mile map sheet S44 showing route from Ngahere via Blackball to Roa. Source: Land Information New Zealand (LINZ) and licensed by LINZ for re-use under the Creative Commons Attribution 3.0 New Zealand licence.
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In 2002, to mark the 150th anniversary of the introduction of the Watsonian vice-county system, the NBN Trust commissioned the digitisation of the 112 vice-county boundaries for England, Scotland and Wales, based on 420 original one-inch to the mile maps annotated by Dandy in 1947, and held at the Natural History Museum, London. The resulting ...