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U.K. and Ireland Trigpoints
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Description:
All survey marks or objects used by the UK Ordnance Survey, Ordnance Survey Northern Ireland (OSNI)
PLEASE NOTE, THERE IS A FACILITY TO SUGGEST CHANGES TO WAYMARKS, THE UK WAYMARKERS WOULD PREFER IF YOU EMAILED THEM DIRECT IF ANY CHANGES TO THEIR WAYMARKS ARE NEEDED. THANK YOU.

choose your Region from approved UK Region Map

Expanded Description:
All survey marks or objects used by the UK Ordnance Survey, Ordnance Survey Northern Ireland (OSNI) Ordnance Survey Ireland (OSI)& EA Environment Agency. Can include Cut bench marks, Rivets, Flush Brackets, Trig pillars in fact any point used and recorded by ordnance survey, OSNI or OSI. This category can include Triangulation Stations placed by the Admiralty Hydrographic Department that feature on various points around the UK coast. Can also include EABM (Environment Agency Bench Mark). Trigpoints are the common name for "triangulation pillars". These are concrete pillars, about 4' tall, which were used by the Ordnance Survey in order to determine the exact shape of the country. They are generally located on the highest bit of ground in the area, so that there is a direct line of sight from one to the next. By sitting a theodolite (an accurate compass built into a telescope) on the top of the pillar, accurate bearings to nearby trigpoints could be taken.
This category also includes any confirmed other Ordnance Survey marks such as cut bench marks, O/S tide markers, OS rivets, OS bolts, Fundamental bench marks, surface blocks, Berntsen's, blocks, passive and active GPS active stations and flush bracket's on constructions other than trig pillars. Many cut bench marks can be researched on www.old-maps.co.uk (1890's OS maps) which show their exact location and height. If you know of any other easily accessible resources please let group know.

EABM's are placed by the Environment Agency

Related and other useful sites.

www.trigpointinguk.com (OSGB36)

OS benchmarks (OSGB36)

Bench-marks.org.uk non trig pillar marks

Yahoo trig group Membership needed.

TrigTools.co.uk Co-ordinate conversion

MSN OSBM group (OSGB36)

www.nearby.org.uk (variety of datums) Co-ordinate conversions

OS map of Active Stations (OSGB36)

Waymarking.com uses WGS84 datum. Other sites use other datums.


Here are definitions of common OS marks.
OSBM BOLT "OSBM Bolt" is quite large - an inch or two in diameter (25 - 50mm) (sizes vary), with letters "O S B M" and an arrow engraved into the Bolt itself.(Some of the older ones have no markings.) Bolt
1GL BOLT or PA BOLT1GL BOLT or PA BOLT is a cut mark with a small bolt. The bolt can be next to the cut benchmark or in the apex. 1GL BOLT or PA BOLT
CUT BENCHMARK A cut mark in stone/brick. Some have been found upside-down. CUT BENCHMARK
RIVET WITH CUT BENCHMARK. A rivet is a small round headed bolt no more than half and inch (12mm) in diameter. They are situated ABOVE a cut benchmark. RIVET WITH CUT BENCHMARK
FUNDAMENTAL BENCHMARK. These are about a foot high (30 cm) with a large bolt on top, with a metal plaque. Worth noting also is that some standard FBMs have been cut down to ground level. Some of these have a new bolt on top, but not all. FUNDAMENTAL BENCHMARK
FLUSH BRACKET. These can be found on trig pillars, buildings, bridges etc. They all have an individual number, which you should log. FLUSH BRACKET
SURFACE BLOCK. A rivet set in a concrete base about 6 inches across (15cm) flush at ground level. SURFACE BLOCK
RIVET AND BENCHMARK (OLD STYLE) I have been told that it is the old style of rivet. It is like a headless nail which has been driven into the granite. The top of the stump protrudes out of the rock by about a quarter of an inch (6mm). The only place I have found one is on Dartmoor, where there are several. RIVET AND BENCHMARK (OLD STYLE)
PIVOT BENCH MARKS. A benchmark which has an empty hole above it. There is no horizontal mark. PIVOT BENCH MARKS
PROJECTING BRACKET. These brackets are the predecessor to the Flush Bracket. 258 listed on OSBM. PROJECTING BRACKET
BERNTSEN. Visible is a metal circular lid about 6 inches across (15cm) at ground level, covering a brass bolt. BERNSTEN
CURRY STOOL is a horizontal concrete tripod at ground level with arms about 3 feet (1m) long & a centre stud. 9 known in the UK. CURRY STOOL
BLOCKS. These are similar to a surface block, often replacing (and made from the remains of) a destroyed trig pillar. 17 known in the UK.
WM8CME is one
BLOCKS
ACTIVE STATIONS contain a GPS receiver antenna and sometimes meteorological instruments. Active Station Map. (Not publicly listed by OS.) Find an Active Station. Active
CONCRETE RING with a centre stud. 2 feet (55cm) diameter. 6 known in the UK. CONCRETE RING
(The pictures below have been borrowed from T:UK which will be replaced with our own waymarking photos when the objects have been submitted. If you are submitting any of the objects please could you let a manager know.)
FENOMARK. 10 of these are known in the UK. FENOMARK
CENTRE is a small cross engraved in metal. There are 2 known in the UK. CENTRE
GRAVITY FBM. Similar to a standard FBM, but bigger, and with a flush bracket. 4 known in the UK. GRAVITY FBM
BURIED BLOCKS 5 known. Like Surface Blocks but roughly one to two feet underground. (No photos in Waymark database yet.)
SPIDER. There are 6 left in the UK. They are similar to the spider on top of standard trig pillar, but placed elsewhere. e.g. in a wall (No photos in Waymark database yet.)
There are ANOMILIES. A raised block without Flush Bracket but with OSBM bolt under a trap door. Irish Pillar
Other survey marks.
ADMIRALTY HYDROGRAPHIC DEPARTMENT LEVEL MARKER. These markers are flat and about 6 inches across (15cm) , set in rock. ADMIRALTY HYDROGRAPHIC DEPARTMENT LEVEL MARKER
EABM (Environment Agency Bench Mark)EABM (Environment Agency Bench Mark)EABM (Environment Agency Bench Mark)

Instructions for Posting a U.K. and Ireland Trigpoints Waymark:
This category requires a CLOSE-UP photo of the OS object and a photo of the object with the general area taken by the waymarker.

When a trig is waymarked 2 photos are required, the trig and one of the flush bracket.

Most waymarkers submit two photos one close up of the object and one a little further away. The object must be recognizable in the photos.

Please ensure you complete both the short and long descriptions including street names if appropriate, nearest hamlet, village or town and County. (If these are not completed then your submission will be rejected.) Postcode is a bonus.

Ensure all Flush Bracket numbers are entered in the appropriate field.

Instructions for Visiting a Waymark in this Category:
A photo should be taken when you visit, and added to the log.
Category Settings:
  • Waymarks can be added to this category
  • New waymarks of this category are reviewed by the category group prior to being published
  • Category is visible in the directory
Variables:
  • Type of Trigpoint
  • Condition
  • Number on Flush Bracket
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Total Records: 1666 Page: 1 of 67 prev<<<[12345678910]>>>next
Image for Benchmark, St John the Baptist - Muston, Leicestershireview gallery

here0 km

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U.K. and Ireland TrigpointsBenchmark, St John the Baptist - Muston, Leicestershire

in U.K. and Ireland Trigpoints

Cut benchmark on north west angle of St John the Baptist church tower, Muston.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/24/2015

last visited: never

Image for Benchmark & PA Bolt - St Lawrence - Sedgebrook, Lincolnshireview gallery

EE2.9 km

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U.K. and Ireland TrigpointsBenchmark & PA Bolt - St Lawrence - Sedgebrook, Lincolnshire

in U.K. and Ireland Trigpoints

Cut benchmark and PA bolt, west face, north west angle of St Lawrence church tower, Sedgebrook.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/23/2015

last visited: never

Image for Benchmark, St. Peter and St. Paul - Barkestone Le Vale, Leicestershireview gallery

SWSW5.8 km

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U.K. and Ireland TrigpointsBenchmark, St. Peter and St. Paul - Barkestone Le Vale, Leicestershire

in U.K. and Ireland Trigpoints

Cut mark on corner of church

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 7/8/2013

last visited: never

Image for Trigpoint - Barkestone, Leicestershireview gallery

SWSW6.1 km

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U.K. and Ireland TrigpointsTrigpoint - Barkestone, Leicestershire

in U.K. and Ireland Trigpoints

Trigpoint in Barkestone, Leicestershire

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 7/8/2013

last visited: never

Image for Cut Mark, All Saints Church, Church Lane, Westborough, Lincolnshireview gallery

NN6.8 km

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U.K. and Ireland TrigpointsCut Mark, All Saints Church, Church Lane, Westborough, Lincolnshire

in U.K. and Ireland Trigpoints

Cut Mark All Saints Church, Church Lane, Westborough, Lincolnshire

posted by: Groundspeak Premium Member thepanteras

location: United Kingdom

date approved: 10/30/2008

last visited: 10/28/2013

Image for Benchmark & 1GL bolt - St Mary - Marston, Lincolnshireview gallery

NENE8.7 km

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U.K. and Ireland TrigpointsBenchmark & 1GL bolt - St Mary - Marston, Lincolnshire

in U.K. and Ireland Trigpoints

Cut benchmark & 1GL bolt on the west face of of the buttress at the south west angle of the tower of St Mary's church, Marston.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/23/2015

last visited: never

Image for PA Bolt and Cut Mark - St Wulfram's Church, Grantham, Lincolnshire.view gallery

EE8.7 km

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U.K. and Ireland TrigpointsPA Bolt and Cut Mark - St Wulfram's Church, Grantham, Lincolnshire.

in U.K. and Ireland Trigpoints

This one does not actually do what it says on the tin.

posted by: Groundspeak Regular Member HitchinLookers

location: East Midlands, United Kingdom

date approved: 7/31/2011

last visited: never

Image for Benchmark & 1GL Bolt - St James - Dry Doddington, Lincolnshireview gallery

NN9 km

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U.K. and Ireland TrigpointsBenchmark & 1GL Bolt - St James - Dry Doddington, Lincolnshire

in U.K. and Ireland Trigpoints

Cut benchmark and hole where 1GL bolt used to be on west face of the church tower of St James', Dry Doddington.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/22/2015

last visited: never

Image for 1GL Bolt and Cut Benchmark , St Mary - Car Colston, Nottinghamshireview gallery

NWNW11.9 km

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U.K. and Ireland Trigpoints1GL Bolt and Cut Benchmark , St Mary - Car Colston, Nottinghamshire

in U.K. and Ireland Trigpoints

1GL bolt and cut mark to left in North-west angle of tower ; 2.90 ft. above surface [1GL, Coventry to Lincoln, Branch Levelling from Mark No. 101(a)] =?= CUT MARK: ST MARYS CH TWR NW ANG NW FACE BUTT (ODN 29.1694m, AGL 0.8m).

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 3/24/2014

last visited: never

Image for 1GL Bolt and Cut Benchmark , St Augustine - Flintham, Nottinghamshireview gallery

NWNW12.2 km

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U.K. and Ireland Trigpoints1GL Bolt and Cut Benchmark , St Augustine - Flintham, Nottinghamshire

in U.K. and Ireland Trigpoints

1GL bolt and cut mark to left in front of tower ; 1.46 ft. above surface [1GL, Coventry to Lincoln, Branch Levelling from Mark No. 106(b)] =?= CUT MARK: ST AUGUSTINES CH TWR 1.2M SE ANG S FACE (ODN 41.3553m, AGL 0.6m).

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/24/2014

last visited: never

Image for Benchmark, St Swithun - Leadenham, Lincolnshireview gallery

NENE18.3 km

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U.K. and Ireland TrigpointsBenchmark, St Swithun - Leadenham, Lincolnshire

in U.K. and Ireland Trigpoints

Cut benchmark on St Swithun's church, Leadenham. North west angle of church tower, west face.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/21/2015

last visited: never

Image for Triangulation Pillar: Clipston, Cotgrave, Nottinghamshire.view gallery

WW20.1 km

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U.K. and Ireland TrigpointsTriangulation Pillar: Clipston, Cotgrave, Nottinghamshire.

in U.K. and Ireland Trigpoints

An OS pillar hidden in a small thicket, next to a Royal Observer Corp post. Between Cotgrave and Normanton-on-the-Wolds, Nottinghamshire.

posted by: Groundspeak Premium Member Happy Humphrey

location: East Midlands, United Kingdom

date approved: 8/19/2012

last visited: 9/3/2012

Image for Cut Mark, St. Michael and All Angels' church, Edmondthorpe, Leicestershire.view gallery

SS20.4 km

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U.K. and Ireland TrigpointsCut Mark, St. Michael and All Angels' church, Edmondthorpe, Leicestershire.

in U.K. and Ireland Trigpoints

Cut mark on the north western side of St.Michael and All Angels' Church in in the rural village of Edmondthorpe.

posted by: Groundspeak Premium Member Jonovich

location: East Midlands, United Kingdom

date approved: 1/8/2012

last visited: never

Image for Benchmark, St Chad - Welbourn, Lincolnshireview gallery

NENE21.7 km

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U.K. and Ireland TrigpointsBenchmark, St Chad - Welbourn, Lincolnshire

in U.K. and Ireland Trigpoints

Cut benchmark on the west side of the south porch, St Chad's church, Welbourn

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/21/2015

last visited: never

Image for Cut Mark, Holy Trinity Church, Teigh, Rutland,view gallery

SS22 km

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U.K. and Ireland TrigpointsCut Mark, Holy Trinity Church, Teigh, Rutland,

in U.K. and Ireland Trigpoints

Cut mark on the North western corner of the Holy Trinity Church in the tiny village of Teigh in Rutland.

posted by: Groundspeak Premium Member Jonovich

location: East Midlands, United Kingdom

date approved: 1/8/2012

last visited: never

Image for Cut Mark, St.Andrews Church, Whissendine, Rutland.view gallery

SS23.5 km

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U.K. and Ireland TrigpointsCut Mark, St.Andrews Church, Whissendine, Rutland.

in U.K. and Ireland Trigpoints

Cut mark on the southern side of St.Andrews Church on Main Street in the rural village of Whissendine.

posted by: Groundspeak Premium Member Jonovich

location: East Midlands, United Kingdom

date approved: 1/8/2012

last visited: never

Image for Cut Mark - Frisby Graveyard, Leicestershire UKview gallery

SWSW24 km

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U.K. and Ireland TrigpointsCut Mark - Frisby Graveyard, Leicestershire UK

in U.K. and Ireland Trigpoints

Cut mark in Brick wall surrounding Frisby Graveyard, Church Road, Frisby, Leicestershire.

posted by: Groundspeak Premium Member Jonovich

location: East Midlands, United Kingdom

date approved: 6/6/2009

last visited: never

Image for Benchmark, All Saints - Wellingore, Lincolnshireview gallery

NENE24.1 km

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U.K. and Ireland TrigpointsBenchmark, All Saints - Wellingore, Lincolnshire

in U.K. and Ireland Trigpoints

Cut benchmark on west face of All Saints' church tower, Wellingore

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/21/2015

last visited: never

Image for Benchmark, A607, Cliff Road - Wellingore, Lincolnshireview gallery

NENE24.3 km

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U.K. and Ireland TrigpointsBenchmark, A607, Cliff Road - Wellingore, Lincolnshire

in U.K. and Ireland Trigpoints

Cut benchmark on the front of a private house, west side of Cliff Road, Wellingore.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/21/2015

last visited: never

Image for Benchmark, St Swithun's, Great Dalby, Leicestershireview gallery

SS24.9 km

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U.K. and Ireland TrigpointsBenchmark, St Swithun's, Great Dalby, Leicestershire

in U.K. and Ireland Trigpoints

Cut mark at entrance to church

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 6/2/2013

last visited: never

Image for EABM - Watergate, Sleaford, Lincsview gallery

EE24.9 km

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U.K. and Ireland TrigpointsEABM - Watergate, Sleaford, Lincs

in U.K. and Ireland Trigpoints

Environment Agency benchmark on Watergate in Sleaford, Lincolnshire.

posted by: Groundspeak Regular Member vw_keychain

location: United Kingdom

date approved: 10/28/2008

last visited: never

Image for Benchmark, St Mary the Virgin - Bunny, Nottinghamshireview gallery

WW25.9 km

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U.K. and Ireland TrigpointsBenchmark, St Mary the Virgin - Bunny, Nottinghamshire

in U.K. and Ireland Trigpoints

Cut benchmark on SW corner of bell tower

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 9/16/2013

last visited: never

Image for Benchmark, All Saints, Hoby, Leicestershireview gallery

SWSW25.9 km

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U.K. and Ireland TrigpointsBenchmark, All Saints, Hoby, Leicestershire

in U.K. and Ireland Trigpoints

Cut mark on corner of wall of church, in the small village of Hoby, Leicestershire. Near Melton Mowbray

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 5/26/2013

last visited: never

Image for Cut Mark - Burlington Road House, Arnold, Nottinghamshire, UKview gallery

WW26.2 km

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U.K. and Ireland TrigpointsCut Mark - Burlington Road House, Arnold, Nottinghamshire, UK

in U.K. and Ireland Trigpoints

Cut mark on 5/6th bricks above pavement of Perry Road on garage at rear of #60 Burlington Road.

posted by: Groundspeak Regular Member Postells

location: East Midlands, United Kingdom

date approved: 4/25/2012

last visited: never

Image for Cut Mark - St Mary's Church, Carlton on Trent, Notts.view gallery

NN26.2 km

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U.K. and Ireland TrigpointsCut Mark - St Mary's Church, Carlton on Trent, Notts.

in U.K. and Ireland Trigpoints

St Mary's Church in Carlton on Trent, is home to a very clear and easy to spot cut mark.

posted by: Groundspeak Regular Member HitchinLookers

location: East Midlands, United Kingdom

date approved: 8/17/2010

last visited: never

Total Records: 1666 Page: 1 of 67 prev<<<[12345678910]>>>next
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