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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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Image for Cut Mark, St.John the Baptist's Church, Thaxted, Essex, CM6 2PEview gallery
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U.K. and Ireland TrigpointsCut Mark, St.John the Baptist's Church, Thaxted, Essex, CM6 2PE

in U.K. and Ireland Trigpoints

A well defined cut-mark on a buttress of this large parish church.

posted by: Groundspeak Premium Member greysman

location: Eastern England, United Kingdom

date approved: 9/17/2014

last visited: never

Image for Cut Bench Mark - Duke's House, Vincent Street, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Duke's House, Vincent Street, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into a block of flats, named Duke's House, on the south side of Vincent Street. The mark is close to the north west corner of the building.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 9/11/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a small, brick boundary wall at the south east corner of Schomberg House, a block of flats, on the north side of Vincent Road in London.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 9/11/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of Napier Hall on the south west side of Vincent Street. The mark is to the right of a door close to the northern corner of the building.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 9/11/2014

last visited: never

Image for Cut Bench Mark - St Gabriel's Church, Cambridge Street, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St Gabriel's Church, Cambridge Street, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of the south west face of St Gabriel's church in Canbridge Street. The mark is located to the left of the three doors.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 9/11/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick wall on the south west side of Ranelagh Road in London. The mark is a couple of bricks to the left of where the wall changes height.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 9/11/2014

last visited: never

Image for Cut Bench Mark - St Saviour's Church, Lupus Street, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St Saviour's Church, Lupus Street, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework on the north west side of St Saviour's church. It is cut to the left of the door at the base of the tower.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 9/11/2014

last visited: never

Image for Intersected Station, St. Ninian's Craigmailen Church - Linlithgow, Scotlandview gallery
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U.K. and Ireland TrigpointsIntersected Station, St. Ninian's Craigmailen Church - Linlithgow, Scotland

in U.K. and Ireland Trigpoints

Intersected station. The church spire of St. Ninian's Craigmailen Church in Linlithgow, Scotland.

posted by: Groundspeak Premium Member Marine Biologist

location: Southern Scotland, United Kingdom

date approved: 9/6/2014

last visited: never

Image for South end of London Bridge Cut Benchmark -- Lake Havasu City AZview gallery
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U.K. and Ireland TrigpointsSouth end of London Bridge Cut Benchmark -- Lake Havasu City AZ

in U.K. and Ireland Trigpoints

A cut bench mark on the south end of the 1831 London Bridge, which was sold to the American developer of Lake Havasu City AZ in 1968, moved across the world, and reassembled in the desert.

posted by: Groundspeak Premium Member Benchmark Blasterz

location: Arizona

date approved: 9/5/2014

last visited: 8/6/2014

Image for North end of London Bridge Cut Benchmark -- Lake Havasu City AZview gallery
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U.K. and Ireland TrigpointsNorth end of London Bridge Cut Benchmark -- Lake Havasu City AZ

in U.K. and Ireland Trigpoints

A cut bench mark on the north end of the 1831 London Bridge, which was sold to the American developer of Lake Havasu City AZ in 1968, moved across the world, and reassembled in the desert.

posted by: Groundspeak Premium Member Benchmark Blasterz

location: Arizona

date approved: 9/5/2014

last visited: 8/6/2014

Image for Cut Bench Mark on All Saints' Church, Terling, Essex. CM3 2PQ.view gallery
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U.K. and Ireland TrigpointsCut Bench Mark on All Saints' Church, Terling, Essex. CM3 2PQ.

in U.K. and Ireland Trigpoints

A cut mark on the tower of All Saints' Church in Terling almost hidden in the lichen.

posted by: Groundspeak Premium Member greysman

location: East Midlands, United Kingdom

date approved: 9/2/2014

last visited: never

Image for Benchmark, St Gregory - Sudbury, Suffolkview gallery
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U.K. and Ireland TrigpointsBenchmark, St Gregory - Sudbury, Suffolk

in U.K. and Ireland Trigpoints

Cut benchmark on St Gregory's church tower, Sudbury, South West angle

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 9/1/2014

last visited: never

Image for Flush Bracket, Town Hall - Sudbury, Suffolkview gallery
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U.K. and Ireland TrigpointsFlush Bracket, Town Hall - Sudbury, Suffolk

in U.K. and Ireland Trigpoints

Flush Bracket on south west angle of Town Hall (Gaol Lane), Sudbury - 109.853' [Ipswich to Long Melford]; Town Hall, south angle.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 9/1/2014

last visited: never

Image for Cut Mark And Rivet On Bridge 182 On Leeds Liverpool Canal - Skipton, UKview gallery
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U.K. and Ireland TrigpointsCut Mark And Rivet On Bridge 182 On Leeds Liverpool Canal - Skipton, UK

in U.K. and Ireland Trigpoints

This cut mark is on the side wall of Bridge 182 on the Leeds Liverpool Canal next to the tow path. The bridge carries Skipton Road over the canal, and is called Snaygill Bridge after a nearby pub.

posted by: Groundspeak Premium Member dtrebilc

location: Yorkshire, United Kingdom

date approved: 8/30/2014

last visited: never

Image for Cut Mark And Rivet On Bridge 180 On Leeds Liverpool Canal - Skipton, UKview gallery
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U.K. and Ireland TrigpointsCut Mark And Rivet On Bridge 180 On Leeds Liverpool Canal - Skipton, UK

in U.K. and Ireland Trigpoints

This cut mark is on the side wall of Bridge 180 on the Leeds Liverpool Canal next to the tow path. The bridge carries Cawder Road over the canal.

posted by: Groundspeak Premium Member dtrebilc

location: Yorkshire, United Kingdom

date approved: 8/30/2014

last visited: never

Image for Cut Mark And Rivet On Mill Bridge Over Eller Beck - Skipton UKview gallery
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U.K. and Ireland TrigpointsCut Mark And Rivet On Mill Bridge Over Eller Beck - Skipton UK

in U.K. and Ireland Trigpoints

This cut mark is on the side wall of Mill Bridge over Eller Beck. This small stream runs very close to the Thanet Canal. This canal is a short canal that connects the Leeds Liverpool Canal with stone quarries just past Skipton Castle.

posted by: Groundspeak Premium Member dtrebilc

location: Yorkshire, United Kingdom

date approved: 8/30/2014

last visited: never

Image for Cut Mark And Rivet On Bridge 172 On Leeds Liverpool Canal - Gargrave, UKview gallery
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U.K. and Ireland TrigpointsCut Mark And Rivet On Bridge 172 On Leeds Liverpool Canal - Gargrave, UK

in U.K. and Ireland Trigpoints

This cut mark is on the side wall of Bridge 172 on the Leeds Liverpool Canal next to the tow path. The bridge carries Ray Bridge Lane over the canal.

posted by: Groundspeak Premium Member dtrebilc

location: Yorkshire, United Kingdom

date approved: 8/30/2014

last visited: never

Image for Cut Mark And Rivet On Bridge 170 On Leeds Liverpool Canal - Gargrave, UKview gallery
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U.K. and Ireland TrigpointsCut Mark And Rivet On Bridge 170 On Leeds Liverpool Canal - Gargrave, UK

in U.K. and Ireland Trigpoints

This cut mark is on the side wall of Bridge 170 on the Leeds Liverpool Canal next to the tow path.

posted by: Groundspeak Premium Member dtrebilc

location: Yorkshire, United Kingdom

date approved: 8/30/2014

last visited: never

Image for Cut Mark With Rivet On Great North Road Bridge, Ferrybridge, UKview gallery
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U.K. and Ireland TrigpointsCut Mark With Rivet On Great North Road Bridge, Ferrybridge, UK

in U.K. and Ireland Trigpoints

This bridge carried the Great North Road across the River Aire until a by-pass was built.

posted by: Groundspeak Premium Member dtrebilc

location: Yorkshire, United Kingdom

date approved: 8/30/2014

last visited: never

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

in U.K. and Ireland Trigpoints

The mark is cut into the brickwork of Parsons Green tube station close to the entrance on the west side of Parsons Green Lane.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 8/29/2014

last visited: never

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

in U.K. and Ireland Trigpoints

The mark is cut into a low, painted wall that supports railings on the north east side of Taviton Street at the junction with Endsleigh Gardens.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 8/29/2014

last visited: never

Image for Cut Bench Mark - The Gardens, West Harrow, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - The Gardens, West Harrow, London, UK

in U.K. and Ireland Trigpoints

The mark is cut into the brickwork of a railway brisge on the north east side of The Gardens opposite West Harrow tube station.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 8/29/2014

last visited: never

Image for Cut Bench Mark - Grand Vista, Battersea Park, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Grand Vista, Battersea Park, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the wall at the north east side of the steps at Grand Vista in Battersea Park in London.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 8/29/2014

last visited: never

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

in U.K. and Ireland Trigpoints

The mark is cut into a brickwork post that forms the end of a brick wall. The mark is on the south west side of Albert Bridge Road.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 8/29/2014

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a retaining wall of a set of steps leading down from Albert Bridge to the Chelsea Embankment. The steps are on the east side of the bridge.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 8/29/2014

last visited: never

Total Records: 5854 Page: 1 of 235 prev<<<[12345678910]>>>next
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