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The Ordnance Memoir of Ireland was a projected 1830s topography of Ireland to be published alongside the maps of the Ordnance Survey of Ireland using materials gathered by surveyors as they traversed the country. The project was cancelled in 1840 as too expensive and beyond the survey's original scope.
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
Thomas Colby, the long-serving Director-General of the Ordnance Survey in Great Britain, was the first to suggest that the Ordnance Survey be used to map Ireland. A highly detailed survey of the whole of Ireland would be extremely useful for the British government, both as a key element in the process of levying local taxes based on land ...
He was also called upon to assist in the preparation of a Parliamentary bill to provide for the general valuation of Ireland. This act was passed in 1826 and Griffith was appointed Commissioner of Valuation in 1827, but did not start work until 1830 when the new 6-inch Ordnance Survey maps required by the statute became available.
An officer in the Royal Engineers, Colby overcame the loss of one hand in a shooting accident to begin in 1802 a lifelong connection with the Ordnance Survey. His most important work was the Survey of Ireland. He began planning this enormous enterprise in 1824 and directed it until 1846, in which year the final maps made by the survey were ...
In general, neither Ireland nor Great Britain uses latitude or longitude in describing internal geographic locations. Instead grid reference systems are used for mapping.. The national grid referencing system was devised by the Ordnance Survey, and is heavily used in their survey data, and in maps (whether published by the Ordnance Survey of Ireland, the Ordnance Survey of Northern Ireland or ...
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 first Ramsden theodolite as used by Roy. (Destroyed by bomb damage in 1941.) In the aftermath of the Jacobite rising of 1745 it was recognised that there was a need for an accurate map of the Scottish Highlands and the necessary survey was initiated in 1747 by Lieutenant-Colonel David Watson, a Deputy Quartermaster-General of the Board of Ordnance.