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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: 5794 Page: 1 of 232 prev<<<[12345678910]>>>next
Image for Benchmark, St. John the Baptist - Garboldisham, Norfolkview gallery
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U.K. and Ireland TrigpointsBenchmark, St. John the Baptist - Garboldisham, Norfolk

in U.K. and Ireland Trigpoints

Cut benchmark on the church tower of St John the Baptist church, Garboldisham. South side north west angle of tower north west face.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 7/31/2014

last visited: never

Image for CBM - St Mary The Virgin, Newington, Kent.view gallery
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U.K. and Ireland TrigpointsCBM - St Mary The Virgin, Newington, Kent.

in U.K. and Ireland Trigpoints

A CBM at St Mary The Virgin Church, High Oak Hill, Newington, Kent. ME9 7JT.

posted by: Groundspeak Premium Member MeerRescue

location: South East England, United Kingdom

date approved: 7/27/2014

last visited: never

Image for Cut Bench Mark - St Faith's Street, Maidstone, Kent, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St Faith's Street, Maidstone, Kent, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of the museum and art gallery on the north west side of St Faith's Street in Maidstone.

posted by: Groundspeak Premium Member Master Mariner

location: South East England, United Kingdom

date approved: 7/27/2014

last visited: never

Image for Triangulation Pillar - Plynmon Fawr, Ceredigion, Wales, UKview gallery
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U.K. and Ireland TrigpointsTriangulation Pillar - Plynmon Fawr, Ceredigion, Wales, UK

in U.K. and Ireland Trigpoints

A flush bracket on a trig point pillar on the summit of Plymonfawr in Ceredigion.

posted by: Groundspeak Regular Member N!TR0

location: South Wales, United Kingdom

date approved: 7/26/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a building on the north west side of London Road in Mitcham. The building used to be a bank and is at the junction of London Road and Lower Green West. The mark is at the east corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/25/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into brickwork on the west side of Clifford Road. The building is a part of Norwood Junction railway station with the being just to the north of the entry of a subway that leads under the tracks to the other side of the station.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/25/2014

last visited: never

Image for Cut Bench Mark - Copers Cope Road, New Beckenham, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Copers Cope Road, New Beckenham, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into a brick built post at the corner of two fences on the south east corner of the junction between Copers Cope Road and Lawn Road.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/25/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into stone at the north corner of the church tower. The church is located on the south west side of Brackley Road in a well looked after churchyard.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/25/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of the south east entrance lodge to Beckenham Place Park. It is located near the western corner of the lodge.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/24/2014

last visited: never

Image for Flush Bracket - Bromley Road, Beckenham, London, UKview gallery
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U.K. and Ireland TrigpointsFlush Bracket - Bromley Road, Beckenham, London, UK

in U.K. and Ireland Trigpoints

This flush bracket (S0532) is attached to the northern most corner of Beckenham Public Hall that is located on the south west side of Bromley Road opposite St George's church.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/24/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a buttress on St George's church that is located on the east side of the High Street in Beckenham.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/24/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut in a wall on the north west side of Tower Bridge Road on the southern approach to Tower Bridge.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/23/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the right post of a former "Boys" entrance to a school on the south west side of Tanner Street.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/22/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building on the south east side of Tower Bridge Road opposite the Premier Inn hotel.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/22/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark and bolt are on the Bermondsey Street face of a small stone building at the junction of Bermondsey Street and Abbey Street.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/21/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick built post, that supports metal railings, on the south west side of Grange Road close to the junction with Tower bridge Road.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/21/2014

last visited: never

Image for Cut Mark - Holy Jesus Church, Church Road, Upper Lydbrook, Gloucestershireview gallery
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U.K. and Ireland TrigpointsCut Mark - Holy Jesus Church, Church Road, Upper Lydbrook, Gloucestershire

in U.K. and Ireland Trigpoints

A Cut Mark on the church in Upper Lydbrook.

posted by: Groundspeak Premium Member Dragontree

location: West Midlands, United Kingdom

date approved: 7/20/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the parapet brickwork of a railway bridge opposite the entrance to Northolt tube station.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/15/2014

last visited: never

Image for Benchmark, Norman Tower, Angel Hill - Bury St Edmunds, Suffolkview gallery
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U.K. and Ireland TrigpointsBenchmark, Norman Tower, Angel Hill - Bury St Edmunds, Suffolk

in U.K. and Ireland Trigpoints

Cut benchmark about 1 metre below pavement level on north face of the Norman gateway on Angel Hill, Bury St Edmunds.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 7/14/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is is cut into a railway bridige on the west side of Southwark Bridge Road to the north of where the railway tracks cross just to the north of Borough Road.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/11/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stone face of a police station on the south east side of Borough High Street.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/11/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into brickwork at the south west corner of Balin House on the north side of Long Lane. The building is surrounded by provate gardens but the mark can be seen from the adjacent public footpath in Long Lane.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 7/11/2014

last visited: never

Image for Cut mark on the Church of All Saints,Messing, Essex. CO5 9TR.view gallery
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U.K. and Ireland TrigpointsCut mark on the Church of All Saints,Messing, Essex. CO5 9TR.

in U.K. and Ireland Trigpoints

A clean cut-mark on the north-west buttress of All Saints' Church in Messing.

posted by: Groundspeak Premium Member greysman

location: Eastern England, United Kingdom

date approved: 6/24/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a post on the south east side of Upper Berkeley Street at the junction with Berkeley Mews.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 6/23/2014

last visited: never

Image for Cut Bench Mark - Hartland Road, Epping, Essex, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Hartland Road, Epping, Essex, UK

in U.K. and Ireland Trigpoints

The mark is cut into brickwork on the north east side of Hartland Road at the junction with Hemnall Street. The Hartland Road street sign frames the mark.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 6/11/2014

last visited: never

Total Records: 5794 Page: 1 of 232 prev<<<[12345678910]>>>next
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