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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: 7019 Page: 1 of 281 prev<<<[12345678910]>>>next
Image for O.S. Triangulation Pillar - Kincaldrum Hill, Angus.view gallery
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U.K. and Ireland TrigpointsO.S. Triangulation Pillar - Kincaldrum Hill, Angus.

in U.K. and Ireland Trigpoints

Ordnance Survey trig pillar, constructed in 1948, in the eastern Sidlaw Hills in the county of Angus.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 4/21/2018

last visited: never

Image for Benchmarks - St John the Evangelist - Slimbridge, Gloucestershireview gallery
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U.K. and Ireland TrigpointsBenchmarks - St John the Evangelist - Slimbridge, Gloucestershire

in U.K. and Ireland Trigpoints

Two cut benchmarks on the tower of St John the Evangelist church, Slimbridge.

posted by: Groundspeak Premium Member SMacB

location: South West England, United Kingdom

date approved: 4/21/2018

last visited: never

Image for Flush Bracket 184 - St Mary - Frampton on Severn, Gloucestershireview gallery
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U.K. and Ireland TrigpointsFlush Bracket 184 - St Mary - Frampton on Severn, Gloucestershire

in U.K. and Ireland Trigpoints

Flush bracket 184 on the west face of St Mary's church, Frampton on Severn.

posted by: Groundspeak Premium Member SMacB

location: South West England, United Kingdom

date approved: 4/21/2018

last visited: never

Image for Firle Beacon Trigpoint - East Sussex, UKview gallery
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U.K. and Ireland TrigpointsFirle Beacon Trigpoint - East Sussex, UK

in U.K. and Ireland Trigpoints

A trigpoint at Firle Beacon near Lewes, East Sussex.

posted by: Groundspeak Premium Member JamesA60

location: South East England, United Kingdom

date approved: 4/11/2018

last visited: never

Image for Benchmark - All Saints - Newtown Linford, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - All Saints - Newtown Linford, Leicestershire

in U.K. and Ireland Trigpoints

A cut benchmark on the south west corner of All Saints' church tower, Newtown Linford.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 4/11/2018

last visited: never

Image for Benchmark - St Martin's Church - Talke, Stoke-on-Trent, Staffordshire, England, UK.view gallery
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U.K. and Ireland TrigpointsBenchmark - St Martin's Church - Talke, Stoke-on-Trent, Staffordshire, England, UK.

in U.K. and Ireland Trigpoints

A cut benchmark and bolt located on Saint Martin's Church in Talke.

posted by: Groundspeak Premium Member Poole/Freeman

location: West Midlands, United Kingdom

date approved: 4/11/2018

last visited: never

Image for O.S. Triangulation Pillar - The Warren (Glamis), Angus.view gallery
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U.K. and Ireland TrigpointsO.S. Triangulation Pillar - The Warren (Glamis), Angus.

in U.K. and Ireland Trigpoints

Ordnance survey trig pillar, constructed in 1952, situated in a low lying position among pastureland north of Glamis Castle.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 4/11/2018

last visited: never

Image for Cut Bench Mark - Church of St. Margaret, Church Road, Clenchwarton, Kins Lynn, PE34 4DYview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Church of St. Margaret, Church Road, Clenchwarton, Kins Lynn, PE34 4DY

in U.K. and Ireland Trigpoints

This small parish church is of an aisleless construction and has a C14th brick west tower, not common even in Norfolk.

posted by: Groundspeak Premium Member greysman

location: Eastern England, United Kingdom

date approved: 4/11/2018

last visited: never

Image for Benchmark - Gatepost - Bradgate Park, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - Gatepost - Bradgate Park, Leicestershire

in U.K. and Ireland Trigpoints

A cut benchmark on a gatepost near Cropston Reservoir on the east side of Bradgate Park.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 4/11/2018

last visited: never

Image for Rivet On Canal Towpath - Swanley, UKview gallery
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U.K. and Ireland TrigpointsRivet On Canal Towpath - Swanley, UK

in U.K. and Ireland Trigpoints

This cut mark and rivet is on the side of the towpath of the Langollen Canal Mainline section of the Shropshire Union Canal next to Swanley Lock 2

posted by: Groundspeak Premium Member dtrebilc

location: North West England, United Kingdom

date approved: 4/11/2018

last visited: never

Image for Benchmark - Bridge - Bradgate Park, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - Bridge - Bradgate Park, Leicestershire

in U.K. and Ireland Trigpoints

A cut benchmark on the east parapet (north end) of a stone footbridge over the River Lin in Bradgate Park.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 4/4/2018

last visited: never

Image for Rivet - Bradgate Park, Leicestershireview gallery
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U.K. and Ireland TrigpointsRivet - Bradgate Park, Leicestershire

in U.K. and Ireland Trigpoints

An OS survey rivet on a rock in Bradgate Park.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 4/1/2018

last visited: never

Image for Hulme -  Stoke-on-Trent, Staffordshire, England, UK.view gallery
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U.K. and Ireland TrigpointsHulme - Stoke-on-Trent, Staffordshire, England, UK.

in U.K. and Ireland Trigpoints

The triangulation pillar is located in Park Hall Country Park, Hulme Road near Hulme in Stoke-on-Trent.

posted by: Groundspeak Premium Member Poole/Freeman

location: West Midlands, United Kingdom

date approved: 3/27/2018

last visited: never

Image for Benchmark - St Mary - Beachamwell, Norfolkview gallery
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U.K. and Ireland TrigpointsBenchmark - St Mary - Beachamwell, Norfolk

in U.K. and Ireland Trigpoints

Cut benchmark on the north west corner of St Mary's church, Beachamwell, near the round bell tower.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 3/27/2018

last visited: never

Image for Cut Bench Mark with Rivet - Church of St. John, Church Road, Terrington St. John, Norfolk. PE14 7RZview gallery
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U.K. and Ireland TrigpointsCut Bench Mark with Rivet - Church of St. John, Church Road, Terrington St. John, Norfolk. PE14 7RZ

in U.K. and Ireland Trigpoints

On the south face of the tower, a nice cut-mark and rivet.

posted by: Groundspeak Premium Member greysman

location: Eastern England, United Kingdom

date approved: 3/27/2018

last visited: never

Image for Benchmark - Carpenter's Lodge, Sluice Road - Denver, Norfolkview gallery
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U.K. and Ireland TrigpointsBenchmark - Carpenter's Lodge, Sluice Road - Denver, Norfolk

in U.K. and Ireland Trigpoints

A cut benchmark at the east end of Carpenter's Lodge, Sluice Road, Denver.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 3/23/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building belonging to Dulwich College on the south east side of Dulwich Common. The mark is on the north face of the building close to the west corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 3/23/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a cottage on the east side of Gallery Road to the south east of the Dulwich Picture Gallery. The mark is on the north face at the north west corner of the cottage.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 3/23/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building at the junction of Dulwich Village and Gilkes Place. The mark is on the south west face of the building at its south corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 3/23/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick wall on the north west side of Village Way in North Dulwich. The mark is immediately to the right of a wooden gate/door in the wall.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 3/23/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework (possibly concrete) of a building on the north west side of Church Road in Stanmore. The mark is on the south east face of the building at its south corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 3/23/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of St John's Church on the south side of Uvbridge Road. The mark is cut into a buttress at the north west corner of the church's tower.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 3/23/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cit into the brickwork of a building on the south west side of Stanmore Hill close to the junction with Green Lane. The mark is on the north west face of the building at its north corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 3/23/2018

last visited: never

Image for PA Bolt and Cut Bench Mark - Church of St. Clement, Churchgate Way, Terrington St.Clement, Norfolk.view gallery
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U.K. and Ireland TrigpointsPA Bolt and Cut Bench Mark - Church of St. Clement, Churchgate Way, Terrington St.Clement, Norfolk.

in U.K. and Ireland Trigpoints

Slightly worn flèches but nice top bar with bolt.

posted by: Groundspeak Premium Member greysman

location: Eastern England, United Kingdom

date approved: 3/13/2018

last visited: never

Image for Benchmark - St Paul - Woodhouse Eaves, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Paul - Woodhouse Eaves, Leicestershire

in U.K. and Ireland Trigpoints

A cut benchmark on the eastern end of St Paul's church, Woodhouse Eaves.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/4/2018

last visited: never

Total Records: 7019 Page: 1 of 281 prev<<<[12345678910]>>>next
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