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The original draftsman's drawings for the area around St Columb Major in Cornwall, made in 1810. Detail from 1901 Ordnance Survey map of the Imperial fortress colony of Bermuda (showing St. George's Town and St. George's Garrison), compiled from surveys carried out between 1897 and 1899 by Lieutenant Arthur Johnson Savage, Royal Engineers.
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.
The Ordnance Survey Drawings are a series of 351 of the original preliminary drawings made by the surveyors of the Ordnance Survey between the 1780s and 1840 in preparation for the publication of the one-inch-to-the-mile "Old Series" of maps of England and Wales.
The first Ramsden theodolite as used by Roy. (Destroyed by bomb damage in 1941.) In the aftermath of the Jacobite rising of 1745, the Duke of Cumberland (military commander against the rebels) – advised by Lieutenant-Colonel David Watson, a Deputy Quartermaster-General of the Board of Ordnance – recognised that there was a need for an accurate map of the Scottish Highlands.
Littledean Camp is in fact a castle overlooking the village of Littledean in Gloucestershire, England, notable for its unique early Norman design.. Originally known as "Littledean Roman Camp" or just "Roman Camp" whilst once thought to have had Roman origins (as reflected in older Ordnance Survey maps [1]), 20th century archaeology has shown that the castle was built in the 11th century ...
"An Account of the Trigonometrical Survey Carried on in the Years 1791, 1792, 1793, and 1794". Philosophical Transactions of the Royal Society. 84: 414– 622. doi: 10.1098/rstl.1795.0023. Owen, Tim; Pilbeam, Elaine (1992). Ordnance Survey, map makers to Britain since 1791. Southampton: Ordnance Survey (HMSO). ISBN 9780319002490. OCLC 28220563.
Parish boundaries are shown on the old "1 inch" Ordnance Survey maps, although these are the boundaries of the civil parish which may be different. Parish boundaries are not shown on the modern "Landranger" maps.
The Ordnance Survey had always endeavoured to mark visible antiquities on its maps, and in 1920 had appointed its first archaeology officer: the role had subsequently developed into a department of specialists maintaining a national record of archaeological sites. In 1983 the responsibilities of the Archaeology Division were transferred to the ...