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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: 6103 Page: 1 of 245 prev<<<[12345678910]>>>next
Image for Pivot Mark on St Michael's Church - Lilleshall, Shropshireview gallery
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U.K. and Ireland TrigpointsPivot Mark on St Michael's Church - Lilleshall, Shropshire

in U.K. and Ireland Trigpoints

This Pivot Mark is located on St Michael's Church in Lilleshall, Shropshire.

posted by: Groundspeak Premium Member GCMTWood

location: West Midlands, United Kingdom

date approved: 2/27/2015

last visited: never

Image for Cut Benchmark on St Andrew's Church Perimeter Wall in Wroxeter, Shropshireview gallery
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U.K. and Ireland TrigpointsCut Benchmark on St Andrew's Church Perimeter Wall in Wroxeter, Shropshire

in U.K. and Ireland Trigpoints

This Cut Benchmark is located on the perimeter wall of St Andrew's Church in Wroxeter, Shropshire

posted by: Groundspeak Premium Member GCMTWood

location: West Midlands, United Kingdom

date approved: 2/27/2015

last visited: never

Image for Cut Benchmark with Bolt on St Andrew's Church, Wroxeter. Shropshireview gallery
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U.K. and Ireland TrigpointsCut Benchmark with Bolt on St Andrew's Church, Wroxeter. Shropshire

in U.K. and Ireland Trigpoints

This Cut Benchmark is located on St Andrew's Church in Wroxeter, Shropshire.

posted by: Groundspeak Premium Member GCMTWood

location: West Midlands, United Kingdom

date approved: 2/27/2015

last visited: never

Image for Benchmark and 1GL bolt, St Mary at the Elms - Ipswich, Suffolkview gallery
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U.K. and Ireland TrigpointsBenchmark and 1GL bolt, St Mary at the Elms - Ipswich, Suffolk

in U.K. and Ireland Trigpoints

Cut benchmark and 1GL bolt on St Mary at the Elms church, Ipswich

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 2/24/2015

last visited: never

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

in U.K. and Ireland Trigpoints

The mark is cut into the brickwork of a house at the junction of Charleville Road and Vereker Road. The mark is on the Charleville Road face of the building.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 2/24/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of a former church on the north west side of Castletown Road at the junction with Challoner Street.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 2/24/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick post on the south side of Margravine Gardens close to the junction with Palliser Road. The brick post is at the northern corner of Margravine Cemetery.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 2/24/2015

last visited: never

Image for Cut Benchmark on Halfway House, The Wrekin, Shropshireview gallery
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U.K. and Ireland TrigpointsCut Benchmark on Halfway House, The Wrekin, Shropshire

in U.K. and Ireland Trigpoints

This Cut Benchmark is located on Halfway House on the Wrekin, Shropshire.

posted by: Groundspeak Premium Member GCMTWood

location: West Midlands, United Kingdom

date approved: 2/21/2015

last visited: never

Image for Horton Parish Bench mark 3 - Milestoneview gallery
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U.K. and Ireland TrigpointsHorton Parish Bench mark 3 - Milestone

in U.K. and Ireland Trigpoints

Bench mark & Rivet on top of milestone

posted by: Groundspeak Premium Member dave.johnson

location: South West England, United Kingdom

date approved: 2/21/2015

last visited: 2/21/2015

Image for Cut Benchmark on Hadley Methodist Church in Hadley, Telford, Shropshireview gallery
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U.K. and Ireland TrigpointsCut Benchmark on Hadley Methodist Church in Hadley, Telford, Shropshire

in U.K. and Ireland Trigpoints

This Cut Benchmark is located on the Hadley Methodist Church in Hadley, Telford, Shropshire.

posted by: Groundspeak Premium Member GCMTWood

location: West Midlands, United Kingdom

date approved: 2/18/2015

last visited: never

Image for Cut Bench Mark on wall - St Marys Church - Donyatt  Parishview gallery
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U.K. and Ireland TrigpointsCut Bench Mark on wall - St Marys Church - Donyatt Parish

in U.K. and Ireland Trigpoints

Cut Bench mark on west end of church.

posted by: Groundspeak Premium Member dave.johnson

location: South West England, United Kingdom

date approved: 2/18/2015

last visited: 2/18/2015

Image for Cut mark on railway bridge - Herne Hill Lane, Donyatt Parish, Somersetview gallery
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U.K. and Ireland TrigpointsCut mark on railway bridge - Herne Hill Lane, Donyatt Parish, Somerset

in U.K. and Ireland Trigpoints

Cut bench mark on railway bridge.

posted by: Groundspeak Premium Member dave.johnson

location: South West England, United Kingdom

date approved: 2/17/2015

last visited: 2/17/2015

Image for Cut Bench mark - Oldway railway bridge - Hatch Beauchampview gallery
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U.K. and Ireland TrigpointsCut Bench mark - Oldway railway bridge - Hatch Beauchamp

in U.K. and Ireland Trigpoints

Cut Bench mark on railway bridge

posted by: Groundspeak Premium Member dave.johnson

location: South West England, United Kingdom

date approved: 2/17/2015

last visited: 2/17/2015

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick post at the entrance to Milberry Close on the north east side of Beaufort Street.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 2/17/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the riverside wall on the south east side of Cheyne Walk opposite the junction with Riley Street.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 2/17/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building on the south west side of The Vale just north of its junction with King's Road.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 2/17/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick and stone wall post on the north east side of Park Walk at St Andrew's Church.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 2/17/2015

last visited: never

Image for Cut Benchmark on Church Hill in Ironbridge, Shropshireview gallery
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U.K. and Ireland TrigpointsCut Benchmark on Church Hill in Ironbridge, Shropshire

in U.K. and Ireland Trigpoints

This Cut Benchmark is located on Church Hill in Ironbridge, Shropshire.

posted by: Groundspeak Premium Member GCMTWood

location: West Midlands, United Kingdom

date approved: 2/16/2015

last visited: never

Image for Cut Benchmark on Madeley Road in Ironbridge, Shropshireview gallery
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U.K. and Ireland TrigpointsCut Benchmark on Madeley Road in Ironbridge, Shropshire

in U.K. and Ireland Trigpoints

This Cut Benchmark is located on Madeley Road in Ironbridge, Shropshire.

posted by: Groundspeak Premium Member GCMTWood

location: West Midlands, United Kingdom

date approved: 2/16/2015

last visited: never

Image for Cut Benchmark on Hodge Bower in Ironbridge, Shropshireview gallery
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U.K. and Ireland TrigpointsCut Benchmark on Hodge Bower in Ironbridge, Shropshire

in U.K. and Ireland Trigpoints

This Cut Benchmark is located on Hodge Bower in Ironbridge, Shropshire.

posted by: Groundspeak Premium Member GCMTWood

location: West Midlands, United Kingdom

date approved: 2/16/2015

last visited: never

Image for Benchmark - Upper Booth, Derbyshireview gallery
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U.K. and Ireland TrigpointsBenchmark - Upper Booth, Derbyshire

in U.K. and Ireland Trigpoints

Cut benchmark on side of farm building, Pennine Way, Upper Booth, Derbyshire.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 2/16/2015

last visited: never

Image for Benchmark, County and Station - Matlock Bath, Derbyshireview gallery
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U.K. and Ireland TrigpointsBenchmark, County and Station - Matlock Bath, Derbyshire

in U.K. and Ireland Trigpoints

Cut benchmark on the County and Station public house in Matlock Bath.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 2/16/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the granite wall running along the south east side of Chelsea Embankment to the east of Battersea Bridge.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 2/16/2015

last visited: never

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

in U.K. and Ireland Trigpoints

The mark is cut into the brickwork of a building on the north east side of Old Church Street opposite Paulton's Street.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 2/16/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the granite of a building on the south west side of Old Church Street just to the north of the junction with King's Road.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 2/16/2015

last visited: never

Total Records: 6103 Page: 1 of 245 prev<<<[12345678910]>>>next
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