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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: 6860 Page: 1 of 275 prev<<<[12345678910]>>>next
Image for O.S. Triangulation Pillar - Wester Balgedie, Perth & Kinross.view gallery
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U.K. and Ireland TrigpointsO.S. Triangulation Pillar - Wester Balgedie, Perth & Kinross.

in U.K. and Ireland Trigpoints

Ordnance Survey trig pillar, constructed in 1943, on a roadside verge between Loch Leven and the Lomond Hills in the old county of Kinrosshire.

posted by: Groundspeak Regular Member creg-ny-baa

location: Southern Scotland, United Kingdom

date approved: 7/24/2017

last visited: never

Image for Cut Mark On Bridge 148 On Trent & Mersey Canal - Hassall Green, UKview gallery
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U.K. and Ireland TrigpointsCut Mark On Bridge 148 On Trent & Mersey Canal - Hassall Green, UK

in U.K. and Ireland Trigpoints

This cut mark is on the side of accommodation bridge 148 over the Trent & Mersey Canal and is visible from the canal towpath.

posted by: Groundspeak Premium Member dtrebilc

location: Northwest England, United Kingdom

date approved: 7/21/2017

last visited: never

Image for Cut Benchmark - Marine Drive / Grosvenor Road Rhyl, Walesview gallery
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U.K. and Ireland TrigpointsCut Benchmark - Marine Drive / Grosvenor Road Rhyl, Wales

in U.K. and Ireland Trigpoints

Cut Mark at the East corner of the Royal Alexandria Hospital.

posted by: Groundspeak Regular Member Barthax

location: North Wales, United Kingdom

date approved: 7/21/2017

last visited: never

Image for Cut Bench Mark, Baysdale Abbey, Kildale, nr Stokesley, North Yorkshire. YO21 2SFview gallery
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U.K. and Ireland TrigpointsCut Bench Mark, Baysdale Abbey, Kildale, nr Stokesley, North Yorkshire. YO21 2SF

in U.K. and Ireland Trigpoints

A nicely maintained cut-mark on the west face of this thirteen-bay house.

posted by: Groundspeak Premium Member greysman

location: Northeast England, United Kingdom

date approved: 7/20/2017

last visited: never

Image for Benchmark  - St Stephen - Sneinton, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Stephen - Sneinton, Nottinghamshire

in U.K. and Ireland Trigpoints

Cut benchmark on the west end of St Stephen's church, Sneinton, Nottingham.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 7/17/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of the Gloucester Gate Bridge near The Regent's Park in London. The mark is on the south east side of the bridge beneath the ornate lamp standard at the northern end of the bridge.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/17/2017

last visited: never

Image for Cut Bench Mark - St John's Wood Terrace, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St John's Wood Terrace, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into a low brick wall opeed by a wooden fence. The wall is on the south east of St John's Wood Terrace.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/17/2017

last visited: never

Image for Cut Bench Mark - St John's Wood Terrace, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St John's Wood Terrace, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a low boundary wall on the south east side of St John's Wood Terrace.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/15/2017

last visited: never

Image for Cut Bench Mark - Prince Albert Street, Brighton, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Prince Albert Street, Brighton, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of the Town Hall on the south west side of Prince Albert Street in Brighton. The mark is on the north east face of the building just to the west of the entrance door in Prince Albert Street.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 7/15/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of a former police station at the junction of Ainsley Street and Bethnal Green Road. The mark is on the west face of the building, close to the north west angle, in Ainsley Street.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/15/2017

last visited: never

Image for O.S. Triangulation Pillar - Tower of Johnston, Aberdeenshire.view gallery
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U.K. and Ireland TrigpointsO.S. Triangulation Pillar - Tower of Johnston, Aberdeenshire.

in U.K. and Ireland Trigpoints

Ordnance Survey trig pillar, constructed in 1949, situated next to a 19th century tower on the highest point of the Hill of Garvock, south of the town of Laurencekirk.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 7/15/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a building located at the junction of St Matthew's Row and Wood Close. The mark is on the south face of the building in Wood Close.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/15/2017

last visited: never

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

in U.K. and Ireland Trigpoints

The mark is cut into the brick boundary wall of a school on the west side of Wood Close.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/15/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building on the south side of Dunbridge Street. The mark is located on the north face of the building at its north east corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/15/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a school located on the north west side of Mape Street. The mark is close to the west angle of the main school building.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/15/2017

last visited: never

Image for Cut Bench Mark - Three Colts Lane, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Three Colts Lane, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the graffiti-covered brickwork of a railway arch on the south east side of Three Colts Lane.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/15/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building at the junction of High Street and Chapel Street. The mark is on the north east face of the building in Chapel Street.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 7/15/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of St Nicholas Church. The church is located on the south east side of the High Street just to the west of the Town Bridge. The mark is on the north west face of the church close to its north corner.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 7/15/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the painted stonework of a building on the north east side of Twelvetrees Crescent in east London. The mark is near the west corner of the building on the building's north west face.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/13/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of Eton College. The mark is on the buildings west face on the south side of the main entrance.

posted by: Groundspeak Premium Member Master Mariner

location: Southern England, United Kingdom

date approved: 7/13/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a wall on the north side of Ben Jonson Road just to the west of the road bridge crossing the Regent's Canal.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/13/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a rail bridge that crosses Commercial Road in the East End of London. The mark is on the north side of Commercial Road.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/13/2017

last visited: never

Image for Cut Bench Mark - Low Petergate, York, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Low Petergate, York, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building on the north east side of Low Petergate in York.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/13/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of a building at the junction of King Street and King's Staith in York. The mark is close to the building's west corner and is on the King Street face.

posted by: Groundspeak Premium Member Master Mariner

location: Yorkshire, United Kingdom

date approved: 7/13/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building on the south west side of Castlegate in York. The mark is near the east corner of the building on its north east face.

posted by: Groundspeak Premium Member Master Mariner

location: Yorkshire, United Kingdom

date approved: 7/13/2017

last visited: never

Total Records: 6860 Page: 1 of 275 prev<<<[12345678910]>>>next
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