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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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Currently displaying U.K. and Ireland Trigpoints

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Total Records: 6637 Page: 1 of 266 prev<<<[12345678910]>>>next
Image for Cut Bench Mark with Rivet - Shire Hall, Tindal Square, Chelmsford, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark with Rivet - Shire Hall, Tindal Square, Chelmsford, UK

in U.K. and Ireland Trigpoints

This cut mark with a rivet is on the righthand side of the entrance to Shire Hall from Tindal Square in Chelmsford. The Shire Hall, built in 1791, is a prominent building in Chelmsford.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 12/1/2016

last visited: never

Image for Cut Bench Mark and Bolt - Cathedral Square, Peterborough, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark and Bolt - Cathedral Square, Peterborough, UK

in U.K. and Ireland Trigpoints

This cut mark with bolt is attached to the Guild Hall in Cathedral Square in Peterborough. The bracket is on the east face of the building beneath one of the centre columns (see photos).

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 12/1/2016

last visited: never

Image for Flush Bracket - Cathedral Square, Peterborough, UKview gallery
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U.K. and Ireland TrigpointsFlush Bracket - Cathedral Square, Peterborough, UK

in U.K. and Ireland Trigpoints

This flush bracket is attached to the Guild Hall in Cathedral Square in Peterborough. The bracket is on the west face of the building at its north west corner.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 11/26/2016

last visited: never

Image for Cut Mark - South-East Buttress of St.Andrew's Church, Church Road, Wormingford, Essex. CO6 3AZview gallery
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U.K. and Ireland TrigpointsCut Mark - South-East Buttress of St.Andrew's Church, Church Road, Wormingford, Essex. CO6 3AZ

in U.K. and Ireland Trigpoints

A clean cut-mark on the north-east face of the south-east buttress of the church.

posted by: Groundspeak Premium Member greysman

location: Eastern England, United Kingdom

date approved: 11/26/2016

last visited: never

Image for Cut Bench Mark - Priestgate, Peterborough, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Priestgate, Peterborough, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of a building on the south side of Priestgate, close to the junction with Trinity Street, in Peterborough.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 11/22/2016

last visited: never

Image for Cut Bench Mark - Westminster Bridge Road, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Westminster Bridge Road, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of the tower of the former Christchurch and Upton Chapel that was built in 1873. The tower and spire is all that remains. The mark is cut into the north east face of the tower behind a street sign.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 11/22/2016

last visited: never

Image for Blair Muir Triangulation Pillar - Angus, Scotland.view gallery
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U.K. and Ireland TrigpointsBlair Muir Triangulation Pillar - Angus, Scotland.

in U.K. and Ireland Trigpoints

Roadside trig point in the Angus countryside north of Brechin.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 11/22/2016

last visited: never

Image for Cut Bench Mark - Yeoman's Row, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Yeoman's Row, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building at the junction of Yeoman's Row and Brompton Road. The mark is on the Yeoman's Row face of the building.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 11/17/2016

last visited: never

Image for Cut Bench Mark with Pivot - Ennismore Gardens Mews, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark with Pivot - Ennismore Gardens Mews, London, UK

in U.K. and Ireland Trigpoints

The mark with pivot are at the base of a column at the south entrance to Ennismore Garden Mews. The mark is on the west face of the base of the second column from the south.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 11/17/2016

last visited: never

Image for Cut Bench Mark with Rivet - Ennismore Gardens, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark with Rivet - Ennismore Gardens, London, UK

in U.K. and Ireland Trigpoints

This cut mark and rivet, although the rivet is not visible, is located at the corner of a small wall that supports railings in Ennismore Gardens.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 11/17/2016

last visited: never

Image for Cut Bench Mark - Ennismore Gardens Mews, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Ennismore Gardens Mews, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of a wall adjoining a building at the junction of Ennismore Gardens Mews and Ennismore Gardens. The mark is on the Ennismore Gardens Mews face of the wall.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 11/16/2016

last visited: never

Image for Benchmark - Saint Julitta - Lanteglos, Cornwallview gallery
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U.K. and Ireland TrigpointsBenchmark - Saint Julitta - Lanteglos, Cornwall

in U.K. and Ireland Trigpoints

A cut benchmark on the north west corner of St Julitta's church, Lanteglos.

posted by: Groundspeak Premium Member SMacB

location: South West England, United Kingdom

date approved: 11/13/2016

last visited: never

Image for Turin Hill - Angus, Scotland.view gallery
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U.K. and Ireland TrigpointsTurin Hill - Angus, Scotland.

in U.K. and Ireland Trigpoints

Triangulation pillar on the summit of Turin Hill in the county of Angus in eastern Scotland.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 11/12/2016

last visited: never

Image for Cut Bench Mark - Gliddon Road, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Gliddon Road, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a long, tall wall on the west side of Gliddon Road in west London.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 11/12/2016

last visited: never

Image for Cut Bench Mark - Avonmore Place, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Avonmore Place, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into a brick wall at the junction of Avonmore Place and Avonmore Road. The mark is on the north west face of the wall very close to the wall's corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 11/12/2016

last visited: never

Image for Cut Bench Mark - Central Street, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Central Street, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building on the north east side of Central Street opposite Seward Street in Finsbury. The mark is between the gateway to the left of the building and the left window.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 11/12/2016

last visited: never

Image for Cut Bench Mark - Lisson Grove, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Lisson Grove, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a long, high wall on the south west side of Lisson Grove.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 11/8/2016

last visited: never

Image for Cut Bench Mark - Melina Place, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Melina Place, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into concrete rendering of a building known as Melina Court. The mark is at the east corner of the building on the Grove End Road face. The mark is on private property but can be seen, at an angle, from the public footpath.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 11/8/2016

last visited: never

Image for Cut Bench Mark - Grove End Road, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Grove End Road, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a wall on the north east side of Grove End Road close to the famous Beatles zebra crossing in Abbey Road.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 11/6/2016

last visited: never

Image for Cut Bench Mark - Scott Ellis Gardens, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Scott Ellis Gardens, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a block of flats on the north west side of Scott Ellis Gardens. The mark is at the east corner of the building on the north east face.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 11/4/2016

last visited: never

Image for Cut Bench Mark - Kentish Town Road, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Kentish Town Road, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the painted brickwork of a building at the junction of Kentish Town Road and Farrier Street. The mark is on the Kentish Town Road face of the building near the corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 10/31/2016

last visited: never

Image for Cut Bench Mark - Wellington Grove, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Wellington Grove, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into a brick wall on the east side of Wellington Grove opposite St Ursula's Convent School. The mark is close to the corner of the wall and has a hydrant sign above it.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 10/31/2016

last visited: never

Image for Cut Bench Mark - Chislehurst Railway Station, Chislehurst, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Chislehurst Railway Station, Chislehurst, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of Chislehurst railway station. The mark is on the north east side of the station in Station Approach.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 10/31/2016

last visited: never

Image for Cut Bench Mark - East Poultry Avenue, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - East Poultry Avenue, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of Central Markets (Smithfield) on the north east side of East Poultry Avenue that runs through the building.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 10/31/2016

last visited: never

Image for Cut Bench Mark - St Nicholas Church, Chislehurst, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St Nicholas Church, Chislehurst, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of St Nicholas church in Chislehurst. The mark is cut into the face of a buttress located at the south west corner of the church.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 10/27/2016

last visited: never

Total Records: 6637 Page: 1 of 266 prev<<<[12345678910]>>>next
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