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What3words (stylized as what3words) is a proprietary geocode system designed to identify any location on the surface of Earth with a resolution of about 3 metres (9.8 ft). It is owned by What3words Limited, based in London, England. The system encodes geographic coordinates into three permanently fixed
The Ordnance Survey National Grid reference system (OSGB), also known as British National Grid (BNG), [1] [2] is a system of geographic grid references, distinct from latitude and longitude, whereby any location in Great Britain can be described in terms of its distance from the origin (0, 0), which lies to the west of the Isles of Scilly. [3]
Full "ten figure" grid reference Ireland: i888_999: Letter 'i' followed by two decimal numbers - eastings then northings in metres separated by an underscore R: Standard grid references. In each of these cases, the actual coordinates passed to the map sources page will be the centre of the square that the grid ref defines R16 R1267 R123678 ...
Launched in February 2014 and available on iOS and Android, the free app is a fast and highly accurate means of pinpointing a users exact location and displays grid reference, latitude, longitude and altitude. OS Locate does not need a mobile signal to function, so the inbuilt GPS system in a device can be relied upon.
[2] [3] There are 332,216 such grid squares containing at least some land or permanent structure (at low tide), of which 281,131 have Geographs. [4] Geographs are being collected for all parts of Great Britain, Isle of Man and Ireland. The Channel Islands fall outside Britain's grid system, but may be geographed using their local UTM grid.
Location Locality Coordinates (links to map & photo sources) OS grid reference; Yaddlethorpe: North Lincolnshire: Yafford: Isle of Wight: Yafforth: North Yorkshire
The full grid uses offsets from the South Pole (−90°) and the antimeridian (−180°) expressed in base 20 representation. To avoid misreading or spelling objectionable words, the encoding excludes vowels and symbols that may be easily confused with each other. The following table shows the mapping.
The World Geographic Reference System (GEOREF) is a geocode, a grid-based method of specifying locations on the surface of the Earth. GEOREF is essentially based on the geographic system of latitude and longitude , but using a simpler and more flexible notation .