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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: 6821 Page: 1 of 273 prev<<<[12345678910]>>>next
Image for O.S. Triangulation Pillar - Dunnichen Hill, Angus.view gallery
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U.K. and Ireland TrigpointsO.S. Triangulation Pillar - Dunnichen Hill, Angus.

in U.K. and Ireland Trigpoints

Ordnance Survey trig pillar situated on an unnamed top on the south side of Dunnichen Hill in the county of Angus, Scotland.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 6/26/2017

last visited: never

Image for Benchmark - St Denys - Ibstock, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Denys - Ibstock, Leicestershire

in U.K. and Ireland Trigpoints

A cut benchmark on the south west corner of St Denys' church tower.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 6/26/2017

last visited: never

Image for O.S. Triangulation Pillar - Westerkeith Hill, Angus.view gallery
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U.K. and Ireland TrigpointsO.S. Triangulation Pillar - Westerkeith Hill, Angus.

in U.K. and Ireland Trigpoints

Ordnance Survey trig pillar built in 1948, 353 metres above sea level, situated in the Sidlaw Hills above Lundie Craigs.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 6/24/2017

last visited: never

Image for O.S. Triangulation Pillar - Sturdy Hill, Aberdeenshire.view gallery
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U.K. and Ireland TrigpointsO.S. Triangulation Pillar - Sturdy Hill, Aberdeenshire.

in U.K. and Ireland Trigpoints

Ordnance Survey trig pillar high on the rolling moorland of the Eastern Grampians on the border of Aberdeenshire and Angus.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 6/23/2017

last visited: never

Image for O.S. Triangulation Pillar - Hill of Alyth, Perth & Kinross.view gallery
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U.K. and Ireland TrigpointsO.S. Triangulation Pillar - Hill of Alyth, Perth & Kinross.

in U.K. and Ireland Trigpoints

Ordnance Survey trig pillar constructed in 1952 on the 295 metre Hill of Alyth, a mile north of the Perthshire town of Alyth.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 6/15/2017

last visited: never

Image for Benchmark - St John the Baptist - Whitwick, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - St John the Baptist - Whitwick, Leicestershire

in U.K. and Ireland Trigpoints

Cut benchmark on the south west corner of St John the Baptist's church tower, Whitwick.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 6/12/2017

last visited: never

Image for O.S. Triangulation Pillar - Monadh Driseig, Argyll & Bute.view gallery
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U.K. and Ireland TrigpointsO.S. Triangulation Pillar - Monadh Driseig, Argyll & Bute.

in U.K. and Ireland Trigpoints

Ordnance Survey trig pillar in a spectacular location 641 metres above Loch Awe in the south-western highlands of Scotland.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 6/7/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of Victoria Bar in Victoria Street in York. The mark is on the north east face of the Bar between the road arch and footpath arch to the north west.

posted by: Groundspeak Premium Member Master Mariner

location: Yorkshire, United Kingdom

date approved: 6/5/2017

last visited: never

Image for Benchmark - St Andrew - Scole, Norfolkview gallery
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U.K. and Ireland TrigpointsBenchmark - St Andrew - Scole, Norfolk

in U.K. and Ireland Trigpoints

A cut benchmark on the north corner of St Andrew's church, Scole.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 6/3/2017

last visited: never

Image for Benchmark - St Mary - Yaxley, Suffolkview gallery
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U.K. and Ireland TrigpointsBenchmark - St Mary - Yaxley, Suffolk

in U.K. and Ireland Trigpoints

A cut benchmark on the south west corner of St Mary's church tower, Yaxley.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 6/3/2017

last visited: never

Image for Benchmark & Rivet - St Mary's church - Mendlesham, Suffolkview gallery
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U.K. and Ireland TrigpointsBenchmark & Rivet - St Mary's church - Mendlesham, Suffolk

in U.K. and Ireland Trigpoints

A cut benchmark and rivet on the north west corner of St Mary's church tower, Mendlesham.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 6/3/2017

last visited: never

Image for O.S. Triangulation Pillar - Ben Cruachan, Argyll & Bute.view gallery
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U.K. and Ireland TrigpointsO.S. Triangulation Pillar - Ben Cruachan, Argyll & Bute.

in U.K. and Ireland Trigpoints

Remains of an Ordnance Survey pillar, constructed in 1972 on the summit of Ben Cruachan.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 6/3/2017

last visited: never

Image for Cut Bench Mark - Windsor Bridge, Windsor, Berks, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Windsor Bridge, Windsor, Berks, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of Windsor Bridge that crosses the River Thames between Windsor and Eton. The mark is on the north east side of the bridge at the Eton side and is almost in line with the river bank.

posted by: Groundspeak Premium Member Master Mariner

location: Southern England, United Kingdom

date approved: 6/3/2017

last visited: never

Image for Cut Bench Mark - St George's Place - Brighton, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St George's Place - Brighton, UK

in U.K. and Ireland Trigpoints

This mark is cut into the granite of a drinking fountain/obelisk at the southern end of a green between St George's Place and Richmond Place in Brighton. The mark is on the east face of the drinking fountain.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 6/3/2017

last visited: never

Image for Cut Mark with Rivet - Staines Bridge, Staines, UKview gallery
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U.K. and Ireland TrigpointsCut Mark with Rivet - Staines Bridge, Staines, UK

in U.K. and Ireland Trigpoints

This cut mark and rivet are located on the north west side of Staines Bridge. The mark is on the north east end of the bridge and is almost in line with the riverbank.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 6/3/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of the Roman Catholic church on the south east side of Gresham Road in Staines. The mark is on the north west face of the building.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 6/3/2017

last visited: never

Image for Cut Mark with Rivet - Bounds Green Road, London, UKview gallery
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U.K. and Ireland TrigpointsCut Mark with Rivet - Bounds Green Road, London, UK

in U.K. and Ireland Trigpoints

The cut mark and rivet are on the step of an obelisk on the north east side of Bounds Green Road in London. The mark is at the south east corner of the obelsik.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 6/3/2017

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 the brickwork of a building on the south east side of Station Road in Wood Green, London.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 6/3/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of Barnespool Bridge. It is on the north west side of the bridge at its south end.

posted by: Groundspeak Premium Member Master Mariner

location: Southern England, United Kingdom

date approved: 5/30/2017

last visited: never

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

in U.K. and Ireland Trigpoints

This cut mark and rivet are located on the south west side of King William's Temple in Kew Gardens, London.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/30/2017

last visited: never

Image for Flush Bracket - St Mary's Church, Greenhithe, Kent, UKview gallery
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U.K. and Ireland TrigpointsFlush Bracket - St Mary's Church, Greenhithe, Kent, UK

in U.K. and Ireland Trigpoints

This flush bracket is attached to the south west face of St Mary's church in Greenhithe. The church is on the south east side of London Road.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 5/30/2017

last visited: never

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

Total Records: 6821 Page: 1 of 273 prev<<<[12345678910]>>>next
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