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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: 6194 Page: 1 of 248 prev<<<[12345678910]>>>next
Image for Cut Bench Mark - Twickenham Road, Isleworth, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Twickenham Road, Isleworth, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a block of flats on the south east side of Twickenham Road in Isleworth. The mark, at the north west corner of the flats, is on private property but can be seen from public footpaths that pass the building.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/24/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a bridge parapet on the south side of Whitton Road in Twickenham. The mark is at the west end of the bridge.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/24/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into abrickwork post of a long wall on the south side of Chertsey Road at the junction with Whitton Road in Twickenham.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/24/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick post on the south west side of London Road at the north west end of a bridge. The brick post ties the bridge parapet to a brick wall.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/24/2015

last visited: never

Image for EABM (NRA) - Ranelagh Drive, St Margarets, London, UKview gallery
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U.K. and Ireland TrigpointsEABM (NRA) - Ranelagh Drive, St Margarets, London, UK

in U.K. and Ireland Trigpoints

This National Rivers Authority (NRA) rivet is on the north east side of Ranelagh Drive at the junction with Isleworth Promenade in St Margarets.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/23/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stone base of a brick pillar at the foot of the northern set of stairs leading to the pedestrian footbridge across the River Thames.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/23/2015

last visited: never

Image for Cut Bench Mark & Bolt - Kew Road, Richmond, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark & Bolt - Kew Road, Richmond, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of St John's church on the south east side of Kew Road in Richmond.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/23/2015

last visited: never

Image for Cut Bench Mark - Cholmondeley Walk, Richmond, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Cholmondeley Walk, Richmond, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a railway viaduct that crosses Cholmondeley Walk in Richmond. The mark is on the south east face of the viaduct.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/21/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into stonework that forms a wall on the north east side of Riverside at the junction with Friars Lane in Richmond.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/21/2015

last visited: never

Image for Cut Bench Mark - St Mary Magdalene Church, Church Walk, Richmond, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St Mary Magdalene Church, Church Walk, Richmond, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of St Mary Magdalene Church in Richmond. It is on the northern side of the church on a westerly facing wall adjacent to some railings.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/21/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of the bridge's parapet. It is on the north west side of the bridge at its centre point.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/21/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of Holy Trinity church on the south east side of Castlenau in Barnes. The mark is on the south west face at the most weterly angle of the church.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/17/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of Barnes railway station. It is on the north east face at the north corner of the building in Station Road.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/17/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a white, stone milestone on the north side of Upper Richmond Road just west of the junction with Rock's Lane.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/17/2015

last visited: never

Image for Cut Bench Mark - Milestone Green, East Sheen, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Milestone Green, East Sheen, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into a white milestone marker at Milestone Green that is at the junction of Upper Richmond Road and Sheen Lane.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/17/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This bench mark is cut into a "Metropolitan Drinking Fountain and Cattle Trough Association" trough on Wimbledon Common. The mark is on the east face of the trough at the north east corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/17/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the base of a small, stone war memorial on Wimbledon Common. The mark is on the south west face close to the south corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/17/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building on the north side of Vernon Road at the junction with Sheen Lane in Mortlake.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/17/2015

last visited: never

Image for Benchmark, Radcliffe Drive - Ipswich, Suffolkview gallery
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U.K. and Ireland TrigpointsBenchmark, Radcliffe Drive - Ipswich, Suffolk

in U.K. and Ireland Trigpoints

Cut benchmark on private residence, Radcliffe Drive, Ipswich.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 5/10/2015

last visited: never

Image for Benchmark, Eccles Road - Ipswich, Suffolkview gallery
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U.K. and Ireland TrigpointsBenchmark, Eccles Road - Ipswich, Suffolk

in U.K. and Ireland Trigpoints

Cut benchmark on private residence, Eccles Road, Ipswich.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 5/10/2015

last visited: never

Image for Benchmark, Hawthorn Drive - Ipswich, Suffolkview gallery
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U.K. and Ireland TrigpointsBenchmark, Hawthorn Drive - Ipswich, Suffolk

in U.K. and Ireland Trigpoints

Cut benchmark on a private residence on Hawthorn Drive, Ipswich

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 5/10/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brickwork post on the north east side of Calonne Road, almost opposite the Buddhist Temple, where the boundary continues as a wooden fence.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/10/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a wall on the south east side of High Street Wimbledon at a junction with a cut called The Green.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/10/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick wall on the north east side of Manor Road at the junction with Ferry Road in Teddington.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/6/2015

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of the Teddington Carnegie library on the north east side of Waldegrave Road in Teddington.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/6/2015

last visited: never

Total Records: 6194 Page: 1 of 248 prev<<<[12345678910]>>>next
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