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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: 6549 Page: 1 of 262 prev<<<[12345678910]>>>next
Image for Cut Mark - Holkham Estate Office, Wells-Next-the -Sea, Norfolk.view gallery
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U.K. and Ireland TrigpointsCut Mark - Holkham Estate Office, Wells-Next-the -Sea, Norfolk.

in U.K. and Ireland Trigpoints

A nice cut-mark on the Estate Office at Holkham Hall.

posted by: Groundspeak Premium Member greysman

location: Eastern England, United Kingdom

date approved: 8/21/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of an aprtment block at the junction of Howley Place and Park Place Villas. The mark is at the north corner of the building on the north west face.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 8/21/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building on the north east side of St Mary's Terrace. The mark is at the west point of the building on its north west face.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 8/21/2016

last visited: never

Image for Cut Benchmark -- Southwest end Blackfriar's Bridge, London, Southwark, UKview gallery
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U.K. and Ireland TrigpointsCut Benchmark -- Southwest end Blackfriar's Bridge, London, Southwark, UK

in U.K. and Ireland Trigpoints

A cut benchmark on the southwest end of Blackfriar's Bridge in the Inner London borough of Southwark

posted by: Groundspeak Premium Member Benchmark Blasterz

location: London, United Kingdom

date approved: 8/20/2016

last visited: 8/21/2016

Image for Cut Mark, St. Peter's Church, Barnburgh, Doncaster. UKview gallery
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U.K. and Ireland TrigpointsCut Mark, St. Peter's Church, Barnburgh, Doncaster. UK

in U.K. and Ireland Trigpoints

A well defined cut mark on the church.

posted by: Groundspeak Premium Member wireworm

location: Yorkshire, United Kingdom

date approved: 8/20/2016

last visited: never

Image for Cut Bench Mark and Bolt - St Mary's Church, Paddington Green, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark and Bolt - St Mary's Church, Paddington Green, London, UK

in U.K. and Ireland Trigpoints

The mark is cut into the stonework of St Mary's Church in Paddington Green. The mark is at the west end of the church close to the second column, from the north, at the porch.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 8/20/2016

last visited: never

Image for Cut Mark and Rivet, Swaffham Methodist Church, 1 London Street, Swaffham, Norfolk. London St, Swaffham PE37 7DD.view gallery
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U.K. and Ireland TrigpointsCut Mark and Rivet, Swaffham Methodist Church, 1 London Street, Swaffham, Norfolk. London St, Swaffham PE37 7DD.

in U.K. and Ireland Trigpoints

A nice Cut-mark with Rivet on the north side of the chapel portico.

posted by: Groundspeak Premium Member greysman

location: Eastern England, United Kingdom

date approved: 8/10/2016

last visited: never

Image for Covered Cut Mark, Westbrooke Barns, West End, Bradenham, Norfolk. IP25 7QZ.view gallery
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U.K. and Ireland TrigpointsCovered Cut Mark, Westbrooke Barns, West End, Bradenham, Norfolk. IP25 7QZ.

in U.K. and Ireland Trigpoints

This cut mark has been covered up during the rendering of the lower part of the building's east wall.

posted by: Groundspeak Premium Member greysman

location: Eastern England, United Kingdom

date approved: 8/10/2016

last visited: never

Image for Cut Mark - St.Andrew's Church, Bradenham, Norfolk.view gallery
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U.K. and Ireland TrigpointsCut Mark - St.Andrew's Church, Bradenham, Norfolk.

in U.K. and Ireland Trigpoints

A slightly worn cut mark on the church of St.Andrew in this rural part of Norfolk.

posted by: Groundspeak Premium Member greysman

location: Eastern England, United Kingdom

date approved: 8/10/2016

last visited: never

Image for Flush Bracket - St Leonard's Church, Scarcliffeview gallery
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U.K. and Ireland TrigpointsFlush Bracket - St Leonard's Church, Scarcliffe

in U.K. and Ireland Trigpoints

A flush bracket on the tower of the parish church of Scarcliffe.

posted by: Groundspeak Premium Member Happy Humphrey

location: East Midlands, United Kingdom

date approved: 8/10/2016

last visited: never

Image for Cut Mark on Gate Post, Hickleton, Doncaster.view gallery
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U.K. and Ireland TrigpointsCut Mark on Gate Post, Hickleton, Doncaster.

in U.K. and Ireland Trigpoints

Cut mark on gate post side of Red Hill Lane.

posted by: Groundspeak Premium Member wireworm

location: Yorkshire, United Kingdom

date approved: 8/5/2016

last visited: 8/4/2016

Image for Cut Mark on Gate Post, Hickleton, Doncaster.view gallery
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U.K. and Ireland TrigpointsCut Mark on Gate Post, Hickleton, Doncaster.

in U.K. and Ireland Trigpoints

Cut mark on the side an old gate post, set back in hedge.Side of Hickleton Road.

posted by: Groundspeak Premium Member wireworm

location: Yorkshire, United Kingdom

date approved: 8/5/2016

last visited: 8/4/2016

Image for Cut Bench Mark - St Laurence Church, Corbets Tey Road, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St Laurence Church, Corbets Tey Road, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of St Laurence's Church in Upminster, London. The mark is at the north east corner of the church on its north face.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 8/5/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a former telephone exchange on the south east side of St Mary's Lane, close to the junction with Tudor Gardens, in Upminster, London. The mark is on the north west face of the building.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 8/5/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building at the junction of Garbutt Road and St Mary's Lane in Upminster, London. The mark is on the Garbutt Road face of the building.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 8/5/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building at the junction of Howard Road and Garbutt Road in Upminster, London. The mark is on the Howard Road face of the building.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 8/5/2016

last visited: never

Image for PA Bolt Cut Mark, St. Wilfred Church, Hickleton, Doncaster.view gallery
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U.K. and Ireland TrigpointsPA Bolt Cut Mark, St. Wilfred Church, Hickleton, Doncaster.

in U.K. and Ireland Trigpoints

A rather eroded cut mark on the church tower.

posted by: Groundspeak Premium Member wireworm

location: Yorkshire, United Kingdom

date approved: 8/5/2016

last visited: 8/4/2016

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building at the junction of Victoria Street and Upper Marlborough Road in St Albans. The mark is on the Victoria Street face of the building.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 8/5/2016

last visited: never

Image for Largo Lawview gallery
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U.K. and Ireland TrigpointsLargo Law

in U.K. and Ireland Trigpoints

A trig point pillar on the summit of Largo Law.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 7/27/2016

last visited: never

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

in U.K. and Ireland Trigpoints

Cut benchmark on the church tower of All Saints, Nailstone.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 7/14/2016

last visited: never

Image for Benchmark - St Giles - Barlestone, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Giles - Barlestone, Leicestershire

in U.K. and Ireland Trigpoints

Cut benchmark on the corner of St Giles' church tower, Barlestone.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 7/14/2016

last visited: never

Image for Benchmark - St Peter - Copt Oak, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Peter - Copt Oak, Leicestershire

in U.K. and Ireland Trigpoints

Cut benchmark on buttress of St Peter's church tower, Copt Oak.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 7/11/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brickwork pillar of a wall at the junction of Aberdeen Place and Cunningham Place.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/8/2016

last visited: never

Image for Cut Mark, Wortley Road,High Green South Yorkshire.view gallery
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U.K. and Ireland TrigpointsCut Mark, Wortley Road,High Green South Yorkshire.

in U.K. and Ireland Trigpoints

Cut Mark set in stone wall Wortley Road.

posted by: Groundspeak Premium Member wireworm

location: Yorkshire, United Kingdom

date approved: 7/1/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick wall on the north side of Trafalgar Street, beneath Brighton Railway Station and close to the Toy and Model Museum.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 7/1/2016

last visited: never

Total Records: 6549 Page: 1 of 262 prev<<<[12345678910]>>>next
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