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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: 6800 Page: 1 of 272 prev<<<[12345678910]>>>next
Image for Benchmark - St Mary - Duddington, Northamptonshireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Mary - Duddington, Northamptonshire

in U.K. and Ireland Trigpoints

Cut benchmark on St Mary's church, Duddington.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 5/18/2017

last visited: never

Image for Balduff Hill Trig Pillar - Perth & Kinross, Scotland.view gallery
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U.K. and Ireland TrigpointsBalduff Hill Trig Pillar - Perth & Kinross, Scotland.

in U.K. and Ireland Trigpoints

Triangulation pillar constructed in 1952, on the summit of Balduff Hill in eastern Perthshire.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 5/15/2017

last visited: never

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

in U.K. and Ireland Trigpoints

The mark is cut into the brickwork parapet of a bridge on the south west side of Station Road in Wood Green, London. The mark is at the north west end of the bridge close to the junction with some railings.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/13/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick garden wall on the north east side of Station Road in Wood Green, London.

posted by: Groundspeak Premium Member Master Mariner

location: Southern England, United Kingdom

date approved: 5/13/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a former school building on the north west side of Church Street in Chesham. The mark is on the south east face of the building at the building's east corner.

posted by: Groundspeak Premium Member Master Mariner

location: Southern England, United Kingdom

date approved: 5/13/2017

last visited: never

Image for Cut Bench Mark - High Street, Chesham, Bucks, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - High Street, Chesham, Bucks, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a former public house on the north west side of the High Street in Chesham. The mark is on the south east face of the building close to the building's south corner.

posted by: Groundspeak Premium Member Master Mariner

location: Southern England, United Kingdom

date approved: 5/12/2017

last visited: never

Image for Benchmark - St Kyneburgha - Castor, Cambridgeshireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Kyneburgha - Castor, Cambridgeshire

in U.K. and Ireland Trigpoints

A cut benchmark on the corner of St Kyneburgha's church, Castor.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 5/9/2017

last visited: never

Image for Flush Bracket, 1036 - Nene Way - Sutton, Cambridgeshireview gallery
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U.K. and Ireland TrigpointsFlush Bracket, 1036 - Nene Way - Sutton, Cambridgeshire

in U.K. and Ireland Trigpoints

Flush bracket 1036 on the front of a private dwelling on Nene Way, Sutton.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 5/9/2017

last visited: never

Image for Flush Bracket, 1174 - St Botolph - Longthorpe, Cambridgeshireview gallery
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U.K. and Ireland TrigpointsFlush Bracket, 1174 - St Botolph - Longthorpe, Cambridgeshire

in U.K. and Ireland Trigpoints

Flush bracket 1174 on the north west corner of St Botolph's church, Longthorpe.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 5/2/2017

last visited: never

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

in U.K. and Ireland Trigpoints

The mark is cut into brickwork of a wing of a railway bridge on the north east side of Waterloo Road. The mark is on the north west side of the bridge.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/2/2017

last visited: never

Image for Cut Bench Mark - St Andrew's Road, Romford, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St Andrew's Road, Romford, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into a stone gatepost of St Andrew's church located on the south west side of St Andrew's Road at the junction with Queen Street. The mark is on the south east gatepost on its north west face.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/2/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a stone wall on the east side of Cotleigh Road. The mark is cut into the northern gatepost of the entrance to St Andrew's Church.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/2/2017

last visited: never

Image for Cut Bench Mark & Bolt - St Stephens Church, Hackington, Kent. CT2 7ABview gallery
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U.K. and Ireland TrigpointsCut Bench Mark & Bolt - St Stephens Church, Hackington, Kent. CT2 7AB

in U.K. and Ireland Trigpoints

A cut bench mark and bolt sited on the tower of St Stephens Church, Hackington, Kent.

posted by: Groundspeak Premium Member MeerRescue

location: South East England, United Kingdom

date approved: 5/2/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building located on the south east side of the High Street in Romford. The mark is on the north west face of the building at the building's west corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/2/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the heavily painted brickwork of a building on the north east side of North Street. The mark is on the south west face of the building close to its west angle.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/2/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of a church on the north west side of West Street in Brighton. The mark is on the south east face of the church close to the north east corner of the church's tower.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 5/2/2017

last visited: never

Image for Cut Mark with Rivet - King's Road, Brighton, UKview gallery
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U.K. and Ireland TrigpointsCut Mark with Rivet - King's Road, Brighton, UK

in U.K. and Ireland Trigpoints

This mark and rivet are on a flight of steps on the south side of King's Road on Brighton seafront. The mark and river are on the first step down on the east flight of stairs.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 5/2/2017

last visited: never

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

in U.K. and Ireland Trigpoints

The flush bracket is attached a building on the south east side of the High Street in Romford. The bracket is on the north west side of the building close to the entrance to a former brewery.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 4/30/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This bracket is attached to a building at the junction of Brunswick Street and Waterloo Street. The bracket is attached to the north east face of the building, in Brunswick Street, close to the building's north east corner.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 4/30/2017

last visited: never

Image for Cut Mark with Rivet - Upper North Street, Brighton, UKview gallery
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U.K. and Ireland TrigpointsCut Mark with Rivet - Upper North Street, Brighton, UK

in U.K. and Ireland Trigpoints

The mark and rivet are on a gate step on the north east side of Upper North Street in Brighton.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 4/30/2017

last visited: never

Image for Cut Mark and Pivot - Upper North Street, Brighton, UKview gallery
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U.K. and Ireland TrigpointsCut Mark and Pivot - Upper North Street, Brighton, UK

in U.K. and Ireland Trigpoints

The mark and pivot are cut into a painted gate step on the north east side of Upper North Street in Brighton.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 4/30/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark and bolt are set into the stonework of St Nicholas church on the south side of Church Street in Brighton. The mark and bolt are on the west face of the church's tower at the west end of the church.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 4/30/2017

last visited: never

Image for Lucklaw Hill Trig Pillar - Fife, Scotland.view gallery
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U.K. and Ireland TrigpointsLucklaw Hill Trig Pillar - Fife, Scotland.

in U.K. and Ireland Trigpoints

Triangulation pillar on the top of Lucklaw Hill, near the village of Balmullo in north-east Fife, constructed in 1948.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 4/30/2017

last visited: never

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

in U.K. and Ireland Trigpoints

The mark is cut into a brick post that supports the churchyard wall on the south west side of Church Street in Brighton. The mark is on the north side of the post.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 4/30/2017

last visited: never

Image for Cut Mark with Rivet - Buckingham Road, Brighton, UKview gallery
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U.K. and Ireland TrigpointsCut Mark with Rivet - Buckingham Road, Brighton, UK

in U.K. and Ireland Trigpoints

This cut mark and rivet are to be found on a step leading to a property on the west side of Buckingham Road in Brighton.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 4/30/2017

last visited: never

Total Records: 6800 Page: 1 of 272 prev<<<[12345678910]>>>next
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