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Topic: Retriangulation of Great Britain

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	Retriangulation of Great Britain - Biocrawler (Site not responding. Last check: 2007-11-05)
		The aim was to replace the original triangulation of Britain, known as the Principal Triangulation, which had been performed between 1783 and 1853, with a more modern and accurate triangulation.
		The results of the retriangulation were then used to create the British national grid reference system which would be the basis of the Ordnance Survey's new maps.
		The coordinate system generated by the retriangulation represented a triumph of the available technology at the time, and was accurate to roughly 20 metres from end to end of the country.
	www.biocrawler.com /encyclopedia/Retriangulation_of_Great_Britain (396 words)

	Britain: Master of all he surveys \| UK Holidays \| Travel \| Telegraph
		There are few sights more stirring to a map enthusiast than the tapered outline of a triangulation pillar emerging from the mist of a bleak mountain.
		Britain needed measuring anew, and the man the OS put in charge was Captain Martin Hotine, head of the Trigonometrical and Levelling Division.
		Each was to be cast with great precision, so that the theodolite sat quarely upon a brass plate set into the flat top of the pillar.
	www.telegraph.co.uk /travel/main.jhtml?xml=/travel/2004/10/30/ettrigpillars.xml&sSheet=/travel/2004/10/30/ixtrvhome.html (537 words)

	Retriangulation of Great Britain - Wikipedia, the free encyclopedia
		The aim was to replace the original triangulation of Britain, known as the Principal Triangulation, which had been performed between 1783 and 1853, with a more modern and accurate triangulation.
		The results of the retriangulation were then used to create the British national grid reference system which would be the basis of the Ordnance Survey's new maps.
		The coordinate system generated by the retriangulation represented a triumph of the available technology at the time, and was accurate to roughly 20 metres from end to end of the country.
	en.wikipedia.org /wiki/Retriangulation_of_Great_Britain (431 words)

	coord1
		The Re-triangulation of Great Britain was observed between 1935 and 1951, and became the Ordnance Survey of Great Britain 1936 (OSGB36) Datum.
		The Scientific Network of Great Britain (SciNet92) is defined by 22 stations at 100-150km intervals, and the National GPS Network (OSGPS93) has a station distribution of the order of 25km in urban areas and 50km in rural areas.
		Great Britain was connected to the ED50 later by two links, one in the Dover-Calais area and the second in the area of the Isle of Wight and the Cotentin Peninsula.
	www.pgie.ufrgs.br /portalead/astgeo/nottingham/coord1.htm (4816 words)

	NationMaster - Encyclopedia: Trig point
		The process of placing trig points on top of prominent hills and mountains began in 1935 to assist in the accurate re-mapping of Great Britain by triangulation directed by the cartographer and mathematician Martin Hotine.
		The first trig points began appearing in 1935, their purpose was to enable the accurate re-mapping of Great Britain.
		Trig Points are short, square based pyramids, usually white but that depends on weathering and how many animals have used it as a rubbing post.
	www.nationmaster.com /encyclopedia/Trig-point (862 words)

	Coordinate Systems, Frames and Datums (Site not responding. Last check: 2007-11-05)
		The Re-triangulation of Great Britain was observed between 1935 and 1951, and became the Ordnance Survey of Great Britain 1936 (OSGB36) Datum.
		The Scientific Network of Great Britain (SciNet92) is defined by 22 stations at 100-150km intervals, and the National GPS Network (OSGPS93) has a station distribution of the order of 25km in urban areas and 50km in rural areas.
		Great Britain was connected to the ED50 later by two links, one in the Dover-Calais area and the second in the area of the Isle of Wight and the Cotentin Peninsula.
	www.agnld.uni-potsdam.de /~shw/3_References/0_GPS/GPSHelmert1.html (4807 words)

	Britain General Hospital New (Site not responding. Last check: 2007-11-05)
		Retriangulation of Great Britain - In 1935, the new Director General of the Ordnance Survey, Major-General Malcolm MacLeod, started the retriangulation of Great Britain, an immense task which involved erecting concrete triangulation pillars (trig points) on prominent hilltops throughout Great Britain.
		This 1922 election was the first election in the new United Kingdom of Great Britain and Northern Ireland, after the Anglo-Irish War had lead to the secession of the Irish Free State.
		New Britain General Hospital Health Sciences Library - New Britain General Hospital Health Sciences Library Serving primarily the staff of New Britain Hospital but also providing access to students from affiliated programs, members of the community, patients and their families.
	doors.vvvvvv3.com /britaingeneralhospitalnew.html (476 words)

	The changing role of national mapping organisations: A case study of Ordnance Survey
		This momentous decision led to the establishment of Ordnance Survey and the subsequent mapping of the whole of Great Britain (the countries of England, Wales and Scotland within the United Kingdom).
		Ordnance Survey continued to maintain and develop topographic mapping of Great Britain throughout the nineteenth century.
		By 1995, nearly a quarter of a century later, this immense programme of work was completed and Ordnance Survey had enabled Great Britain to become the first country in the world to truly enter the digital era.
	www.gisdevelopment.net /policy/international/mi04003.htm (353 words)

	MCofS; Newsletter
		Our objectives were the first ascent of the unclimbed South Face of Sussex (a towering wall of golden granite), the first ascent of the unclimbed South Ridge of Dansketinde (the highest mountain in the range) and first ascents of peaks in the area.
		On Whernside in the Yorkshire Dales there was a great protest in 1935 by the residents.
		They were constructed for the mammoth retriangulation of Great Britain, essential for the improved mapping we enjoy today.
	www.mountaineering-scotland.org.uk /nl/48b.html (1896 words)

	Roy's information site on walking and weather etc.
		The first relatively accurate portrayal of Britain in map form was by an anonymous mapmaker on two joined skins of vellum.
		Their skills were in great demand nearly everywhere to build turnpikes, canals, railways, streets, bridges and enable parliamentary boundary reform and land enclosures.
		Retriangulation and revision of geodetic levelling were completed.
	www.roychetham.co.uk /mapshistory.html (1033 words)

	Historical mapping - From revolution to e-volution (Site not responding. Last check: 2007-11-05)
		England was squeezed between rebellion in Scotland and war with France when King George II commissioned a military survey of the Scottish highlands in 1746.
		In June 1791 the Board purchased a huge new Ramsden theodolite, and surveyors began mapping southern Britain from a baseline that Roy himself had measured several years earlier.
		As Britain entered the First World War, surveyors, draughtsmen and printers from Ordnance Survey were posted overseas.
	leisure.ordnancesurvey.co.uk /tscontent/editorial/historicalmapping/2006/revolutiontoevolution.html (1383 words)

	Britain General Hospital New
		Contains "ER: The Complete Seasons 1-5." Season One - The lives, loves britain general hospital new and losses of the doctors britain general hospital new and nurses of Chicago's County General Hospital.
		Celebrate the 10th anniversary of the most watched britain general hospital new and honored drama of the last decade.
		Season Two - The prescription for unforgettable viewing continues in the the lives, loves, britain general hospital new and losses of the doctors britain general hospital new and nurses of Chicago's County General Hospital.
	sa32.abricad.info /britaingeneralhospitalnew.html (848 words)

	Retriangulation of Great Britain - TvWiki, the free encyclopedia
		The effort was directed by the cartographer and mathematician Martin Hotine, head of the Trigonometrical and Levelling Division, who planned the operation in a manner similar to a military campaign.
		Daily Telegraph article about the retriangulation of Great Britain
		Information and Maps on many aspects of Trigangulation (and Levelling) in Great Britain
	www.tvwiki.tv /wiki/Retriangulation_of_Great_Britain (422 words)

	History of maps since the Royal Board of Ordnance first surveyed Scottish highlands in 1746 (Site not responding. Last check: 2007-11-05)
		As Britain entered the First World War, surveyors, draughtsmen and printers from Ordnance Survey were posted overseas.
		After the war, Ordnance Survey returned to Davidson's agenda; the retriangulation was completed, and metric maps began to appear along National Grid sheet lines.
		In 1974 the position of Ordnance Survey Director General became a civilian post, and in 1983 it became a wholly civilian organisation, with a further change in status in 1999 when the agency became a government trading fund.
	www.ordnancesurvey.co.uk /oswebsite/aboutus/history (1651 words)

	History of the International Collection (Site not responding. Last check: 2007-11-05)
		Modern mapping from aerial photography was considered to be an important contribution to the development of British territories after the Second World War.
		Although the great majority of the maps are topographic, there are significant holdings of geological and land use mapping.
		Ordnance Survey is Great Britain's national mapping agency, providing the most accurate and up-to-date geographic data, relied on by government, business and the public.
	www.ordnancesurvey.co.uk /oswebsite/aboutus/international/collection/history.html (2531 words)

	History.UK.com Listings
		Surveyors began mapping southern Britain from a baseline that Roy himself had measured several years earlier.
		That same year the retriangulation of Great Britain was launched.
		After the war, aerial survey helped speed up the new continuous revision strategy, and up-to-date drawing and printing techniques were introduced and in 1973 the first computerised large-scale maps appeared.
	www.history.uk.com /listings/listing.php?iD=4075 (602 words)

	OSBM
		Probably best associated with the Lake District, but like all other ranges, can be found all over Great Britain.
		Built 1950 to 1952, the average location for each thousand group probably moves further north.
		A few FBs in this range were used on rebuilt trigs after the retriangulation of Great Britain was completed in 1962.
	groups.msn.com /OSBM/pictures (351 words)

	Uppsala: Quaternary Geology (Site not responding. Last check: 2007-11-05)
		The package consists of utility programs to make conversions from latitude and longitude to national grid co- ordinates for Great Britain and Ireland.
		There is a limited amount of checking on the input, for example, but bizarre input may produce bizarre results.
		Input grid values should be in the form `TL933937' (for Great Britain) and `C367821' (for Ireland): note that there are no spaces.
	www.kv.geo.uu.se /llgrconv.doc.html (365 words)

	Snaefell Summit
		Cary in 1816 quotes 2004 ft, though on what authority I have not yet determined, which value found its way into several guidebooks.
		In 1838 the retriangulation of Great Britain by the Ordnance Survey took place and although they used South Barrule they would have redetermined the heights of the major mountains.
		In 1861 Stanford uses a value of 2024 ft which was then replaced by the 2034 determined by the Ordnance survey of 1868.
	www.isle-of-man.com /manxnotebook/tourism/pcards/snaefell.htm (686 words)

	Just A Few Photographers :: View topic - Trig point
		Ok it's not a great photo but I thought you might be interested.
		The British Army had to climb most of the hills in the UK to build these things and this was in the days before good roads, helicopters etc. Just imagine the hard graft needed to get these things up to the summit of a 3000' peak, quite often in atrocious weather conditions.
		The process of placing trig points on top of prominent hills and mountains began in 1935 to assist in the accurate re-mapping of Great Britain by triangulation directed by the cartographer and mathematician Martin Hotine.
	nikonrus.s10.forumsplace.com /viewtopic.php?p=4248 (1055 words)

	OSBM (Site not responding. Last check: 2007-11-05)
		Over 6500 triangulation pillars were erected by the Ordnance Survey of Great Britain.
		Referred to as trig points, these monuments to map making are often found at or near the summits of hills.
		The triangulation pillars were built for the Retriangulation in Great Britain of 1936-62 and were constructed from 1935 to 1960.
	uk.msnusers.com /OSBM/home.msnw (823 words)

	Ordnance Survey
		After the war, Ordnance Survey returned to Davidson's agenda; the retriangulation was completed, and metric maps began to appear along National Grid sheet lines.
		Ordnance Survey digitised the last of some 230,000 maps in 1995, making Britain the first country in the world to complete a programme of large-scale electronic mapping.
		Independent estimates show that the national mapping agency's data now underpins up to £136 billion-worth of economic activity in Britain – everything from crime-fighting and conservation to marketing and mobile phones.
	www.infomat.net /1/focus/foci/ordnance_survey/history.asp (1315 words)

	Geography Library University of Wisconsin-Madison
		Readjustment of the retriangulation of Great Britain and its relationship to the European terrestrial and satellite networks / by V. Ashkenazi...
		Characteristics of rainfall in the Great Basin / by John G. Houghton.
		Global warming policy in Japan and Britain: interactions between institutions and issue characteristics / Shizuka Oshitani.
	www.library.wisc.edu /libraries/Geography/Whats_New/11012006.html (877 words)

	IAG Newsletter (Site not responding. Last check: 2007-11-05)
		Accordingly she or he will enjoy additional natural geometrical structures outlined by the author.
		A great highlight of the text is the
		The author has proven a great talent in illustrating complicated geometrical features.
	www.gfy.ku.dk /~iag/newslett/news7404.htm (2626 words)

	The Angry Corrie 48: Jan-Feb 2001
		One contains "some of the most powerful energies" while the other "became a Retreat of The Great White Brotherhood".
		9f) "The last observations for the retriangulation of Great Britain were made at this triangulation station by Mr E A P Joyce on the 4th June 1962.
		There are 11678 such stations and the first observations were made at ---- in Northamptonshire on 18th April 1936." Name this Cumbrian trig (clue: it's on two Land- rangers) and its companion "first" trig down south.
	www.bubl.ac.uk /org/tacit/TAC/tac48/1016anda.htm (1385 words)

	Biography General Great Patton
		Patton biography general great patton and Etta Anderson's affectionate correspondence is an important aspect of this biography, revealing what it was like to be alive at this time biography general great patton and what it took to keep their family intact.
		Palm Coast and St. Augustine Imaging Centers - The site describes the two medical imaging centers, their imaging examinations, patient preps, insurance plans accepted, radiologists' and staffs' biographies, past newsletters and links to informational sites.
		KS This is a list of hospitals and large clinics in Great Bend.
	pa61.giottofilm.com /biographygeneralgreatpatton.html (677 words)

	History of maps since the Royal Board of Ordnance first surveyed Scottish highlands in 1746 (Site not responding. Last check: 2007-11-05)
		In 1974 the position of Ordnance Survey Director General became a civilian post, and in 1983 it became a wholly civilian organisation, with a further change in status in 1999 when the agency became a government trading fund.
		This inteligent geospatial database makes it even easier for other people's information to be integrated in to it, held as separate layers, or linked to Ordnance Survey mapping.
		In addition to topographic mapping, other layers of information have been added progressively to OS MasterMap®, such as aerial photographic images which precisely match the mapping; data providing the addresses of all properties; and integrated transport information.
	www.ordnancesurveyite.co.uk /aboutus/history/index.html (1647 words)

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