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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: 6752 Page: 1 of 271 prev<<<[12345678910]>>>next
Image for Cut Bench-Mark - Church of St Mary, Raynham Park, East Raynham, Norfolk. NR21 7ERview gallery
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U.K. and Ireland TrigpointsCut Bench-Mark - Church of St Mary, Raynham Park, East Raynham, Norfolk. NR21 7ER

in U.K. and Ireland Trigpoints

Quite well worn, on the tower.

posted by: Groundspeak Premium Member greysman

location: Eastern England, United Kingdom

date approved: 4/26/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a low boundary wall located on the north west of Arkwright Road in London.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/26/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the painted brickwork of a building on the north east side of Heath Street in Hampstead.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/26/2017

last visited: never

Image for Cut Mark and Bolt - St John's Church, Hampstead, London, UKview gallery
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U.K. and Ireland TrigpointsCut Mark and Bolt - St John's Church, Hampstead, London, UK

in U.K. and Ireland Trigpoints

This mark and bolt are set into the stonework of St John's Church in Hampstead. The mark is cut into the east face of the building near the north east corner of the church.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/26/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick post that supports railings and a brick wall on the north east side of Wood Street. The mark is on the south west face of the post.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/26/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the painted brickwork of a building at the junction of Fulbourne Road and Forest Road in London. The mark is on the north east face of the building in Fulbourne Road.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/26/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stone section of a brick post at the junction of a wall and railings on the north east side of Forest Road in London. The mark is on the south west face of the post.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/26/2017

last visited: never

Image for Benchmark - St Mary - Corley, Warwickshireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Mary - Corley, Warwickshire

in U.K. and Ireland Trigpoints

Cut benchmark on St Mary's, the parish church of Corley.

posted by: Groundspeak Premium Member SMacB

location: West Midlands, United Kingdom

date approved: 4/26/2017

last visited: never

Image for Benchmark - St Mary & All Saints - Fillongley, Warwickshireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Mary & All Saints - Fillongley, Warwickshire

in U.K. and Ireland Trigpoints

Cut benchmark on the west face of St Mary & All Saints' church tower, Fillongley.

posted by: Groundspeak Premium Member SMacB

location: West Midlands, United Kingdom

date approved: 4/26/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick post that supports a garden wall on the south east side of Brixton Hill.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/23/2017

last visited: never

Image for Benchmark - St Laurence - Ansley, Warwickshireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Laurence - Ansley, Warwickshire

in U.K. and Ireland Trigpoints

Cut benchmark on the north west corner of St Laurence's church tower.

posted by: Groundspeak Premium Member SMacB

location: West Midlands, United Kingdom

date approved: 4/23/2017

last visited: never

Image for Cut Bench Mark - St Matthew's Church, Brixton Hill, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St Matthew's Church, Brixton Hill, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of St Matthew's church on the south east side of Brixton Hill. The mark is on the south west face at the west corner of the church.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/23/2017

last visited: never

Image for Cut Bench Mark - Upminster Road South, Rainham, Essex, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Upminster Road South, Rainham, Essex, UK

in U.K. and Ireland Trigpoints

The mark is cut into the brickwork of a scholl located on the north west side of Upminster Road South in Rainham, Essex. The mark is on the south east face of the building at its east corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/23/2017

last visited: never

Image for Flush Bracket - St Helen and St Giles Church, Rainham, Essex, UKview gallery
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U.K. and Ireland TrigpointsFlush Bracket - St Helen and St Giles Church, Rainham, Essex, UK

in U.K. and Ireland Trigpoints

This flush bracket is attached to a buttress at the north west corner of St Helen and St Giles Church in Rainham, Essex. The church is on the north east side of the Broadway at the junction with Upminster Road South.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 4/23/2017

last visited: never

Image for CBM - St Lawrence the Martyr, Godmersham, Kent, CT4 7DRview gallery
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U.K. and Ireland TrigpointsCBM - St Lawrence the Martyr, Godmersham, Kent, CT4 7DR

in U.K. and Ireland Trigpoints

A Cut Bench Mark on the Tower of St Lawrence the Martyr church in Canterbuty Road, Godmersham, Kent.

posted by: Groundspeak Premium Member MeerRescue

location: South East England, United Kingdom

date approved: 4/23/2017

last visited: never

Image for Craigowl Hill Trig Pillar - Angus, Scotland.view gallery
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U.K. and Ireland TrigpointsCraigowl Hill Trig Pillar - Angus, Scotland.

in U.K. and Ireland Trigpoints

Triangulation pillar on the summit of Craigowl Hill in the county of Angus, the highest pointing the Sidlaw Hills, constructed in 1936.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 4/23/2017

last visited: never

Image for Benchmark - St Nicholas - Baddesley Ensor, Warwickshireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Nicholas - Baddesley Ensor, Warwickshire

in U.K. and Ireland Trigpoints

Cut benchmark on the east corner of St Nicholas' church tower, Badessley Ensor.

posted by: Groundspeak Premium Member SMacB

location: West Midlands, United Kingdom

date approved: 4/23/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building on the south east side of Clerkenwell Road in London. The mark is at the junction of the building with a long wall extending to the east.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/23/2017

last visited: never

Image for Flush Bracket - Waterworks Road, London, UKview gallery
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U.K. and Ireland TrigpointsFlush Bracket - Waterworks Road, London, UK

in U.K. and Ireland Trigpoints

This flush bracket is attached to a brick built building on the north east side of Waterworks Road in London.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/23/2017

last visited: never

Image for Cut Bench Mark - Church of St. Mary, A148 Fakenham Road, East Rudham, Norfolk. PE31 8SUview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Church of St. Mary, A148 Fakenham Road, East Rudham, Norfolk. PE31 8SU

in U.K. and Ireland Trigpoints

Largely rebuilt after a major collapse in 1873 this parish church has a chancel built in c1200. The cut mark on the porch is extremely worn.

posted by: Groundspeak Premium Member greysman

location: Eastern England, United Kingdom

date approved: 4/22/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonewrok of The Orangery in Kew Gardens. The mark is cut into the south west face at the north end of a small flight of stairs leading up to The Orangery.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/22/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework base of the Aroid House in Kew Gardens. The mak is cut into the north east face of the building at the north corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/22/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a stone post on the north west side of The Pond in Kew Gardens. The post, that is not very tall, is located to the east of some steps leading down to The Pond. The mark is on the north east face of the post.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/22/2017

last visited: never

Image for Flush Bracket - High Street, Windsor, UKview gallery
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U.K. and Ireland TrigpointsFlush Bracket - High Street, Windsor, UK

in U.K. and Ireland Trigpoints

This flush bracket, number 1070, is attached to the south west face of the Guildhall in Windsor High Street. Caution should be exercised when approaching it as there is no footpath.

posted by: Groundspeak Premium Member Master Mariner

location: Southern England, United Kingdom

date approved: 4/22/2017

last visited: never

Image for Cut Bench Mark - St Alban's Street, Windsor, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St Alban's Street, Windsor, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of a building located at the junction of St Alban's Street and Castle Hill in Windsor. The mark is on the north east face of the building in St Alban's Street.

posted by: Groundspeak Premium Member Master Mariner

location: Southern England, United Kingdom

date approved: 4/22/2017

last visited: never

Total Records: 6752 Page: 1 of 271 prev<<<[12345678910]>>>next
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