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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: 7049 Page: 1 of 282 prev<<<[12345678910]>>>next
Image for Benchmark & 1GL Bolt - St Mary - Anstey, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark & 1GL Bolt - St Mary - Anstey, Leicestershire

in U.K. and Ireland Trigpoints

Cut benchmark and 1GL bolt on the north face of St Mary's church tower, Anstey.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 5/23/2018

last visited: never

Image for Flush Bracket S9826 - All Saints - Thurcaston, Leicestershireview gallery
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U.K. and Ireland TrigpointsFlush Bracket S9826 - All Saints - Thurcaston, Leicestershire

in U.K. and Ireland Trigpoints

Flush Bracket S9826 on the south east corner of All Saints' church, Thurcaston.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 5/23/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork parapet of s railway bridge that straddles Digby Road in Homerton. The mark is on the west side of Digby Road at the north side of the bridge.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/23/2018

last visited: never

Image for Cut Bench Mark - St Barnabas Church, Homerton, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St Barnabas Church, Homerton, London, UK

in U.K. and Ireland Trigpoints

The mark is cut into the stonework of the tower of St Barnabas Church on the north side of Homerton High Street. The mark is cut into the south face of the tower at its mid-length.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/23/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into an abutment of a railway bridge on the north side of Bancroft Road in Bethnal Green. The mark is to the left of the bridge when looking north.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/23/2018

last visited: never

Image for Cut Bench Mark - St John the Baptist Church, Erith, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St John the Baptist Church, Erith, UK

in U.K. and Ireland Trigpoints

The mark is cut into the stonework of St John the Baptist church in Erith. The mark is on the west face of the church's tower close to the south west corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/23/2018

last visited: never

Image for O.S. Triangulation Pillar - Kemphill, Coupar Angus, Perth & Kinross.view gallery
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U.K. and Ireland TrigpointsO.S. Triangulation Pillar - Kemphill, Coupar Angus, Perth & Kinross.

in U.K. and Ireland Trigpoints

Ordnance Survey trig pillar, constructed in 1952, situated on low lying farmland just west of the Perthshire town of Coupar Angus.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 5/23/2018

last visited: never

Image for Cut Mark On Bridge 148 On Lancaster Canal - Holme, UKview gallery
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U.K. and Ireland TrigpointsCut Mark On Bridge 148 On Lancaster Canal - Holme, UK

in U.K. and Ireland Trigpoints

This cut mark is on the arch stones of bridge 148 (Sheernest Bridge) that carries Sheernest Lane over the canal.

posted by: Groundspeak Premium Member dtrebilc

location: North West England, United Kingdom

date approved: 5/23/2018

last visited: never

Image for Cut Mark On Bridge 147 On Lancaster Canal - Holme, UKview gallery
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U.K. and Ireland TrigpointsCut Mark On Bridge 147 On Lancaster Canal - Holme, UK

in U.K. and Ireland Trigpoints

This cut mark is on the arch stones of bridge 147 (Holme Mill Bridge) that carries farm traffic over the canal.

posted by: Groundspeak Premium Member dtrebilc

location: North West England, United Kingdom

date approved: 5/23/2018

last visited: never

Image for Cut Mark On Bridge 146 On Lancaster Canal - Burton-in-Kendal, UKview gallery
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U.K. and Ireland TrigpointsCut Mark On Bridge 146 On Lancaster Canal - Burton-in-Kendal, UK

in U.K. and Ireland Trigpoints

This cut mark is on the arch stones of bridge 146 (Braithwaite Bridge) that carries farm traffic over the canal.

posted by: Groundspeak Premium Member dtrebilc

location: North West England, United Kingdom

date approved: 5/23/2018

last visited: never

Image for Cut Mark On Bridge 143 On Lancaster Canal - Yealand Redmayne, UKview gallery
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U.K. and Ireland TrigpointsCut Mark On Bridge 143 On Lancaster Canal - Yealand Redmayne, UK

in U.K. and Ireland Trigpoints

This cut mark is on the arch stones of bridge 143 (Moss Bridge) that carries farm traffic over the canal.

posted by: Groundspeak Premium Member dtrebilc

location: North West England, United Kingdom

date approved: 5/23/2018

last visited: never

Image for Benchmark - St Peter , Radford - Nottingham, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Peter , Radford - Nottingham, Nottinghamshire

in U.K. and Ireland Trigpoints

A worn cut benchmark on the south west corner od St Peter's church tower, Radford, Nottingham.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 5/12/2018

last visited: never

Image for Benchmark - Radford Boulevard - Nottingham, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - Radford Boulevard - Nottingham, Nottinghamshire

in U.K. and Ireland Trigpoints

A cut benchmark on a gatepost odf a private property on Radford Boulevard, Nottingham.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 5/12/2018

last visited: never

Image for Cut Mark With Rivet On Bridge 141 On Lancaster Canal - Yealand Convers, UKview gallery
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U.K. and Ireland TrigpointsCut Mark With Rivet On Bridge 141 On Lancaster Canal - Yealand Convers, UK

in U.K. and Ireland Trigpoints

This cut mark with rivet is on the arch stones of bridge 141 that carries Cinderbarrow Lane over the canal.

posted by: Groundspeak Premium Member dtrebilc

location: North West England, United Kingdom

date approved: 5/8/2018

last visited: never

Image for Cut Bench Mark - Blackwall Tunnel Approach, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Blackwall Tunnel Approach, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of a library on the east side of the Blackwall Tunnel Approach road. The mark is on the west face of the library close to its south west corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/8/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the west face of a brick wall that does not seem to serve a purpose! The wall is on the west bank of Abbey Creek just south of the Greenway.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/8/2018

last visited: never

Image for Cut Bench Mark - Shepherd's Bush Road, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Shepherd's Bush Road, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of a library on the east side of Shepherd's Bush Road. The mark is located at the south west corner of the building.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/8/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a railway bridge that spans Dalling Road in west London. The mark is on the east side of Dalling Road beneath the north east corner of the bridge.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/8/2018

last visited: never

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

in U.K. and Ireland Trigpoints

The mark is cut into the brickwork of a building on the east side of Kensington Court. The mark is on the west face of the building at its north west corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/8/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick gatepost at the entrance to the former St Mary Abbot's Hospital located on the east side of marloes Road.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/8/2018

last visited: never

Image for Cut Bench Mark - Old Stables, Holland Park, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Old Stables, Holland Park, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of the Old Stables belonging to Holland House. The mark is on the north east face of the building.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/8/2018

last visited: never

Image for Benchmark - St Andrew - Whitchurch, Devonview gallery
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U.K. and Ireland TrigpointsBenchmark - St Andrew - Whitchurch, Devon

in U.K. and Ireland Trigpoints

Inverted Cut benchmark & 1GL bolt in the south face of St Andrew's church tower.

posted by: Groundspeak Premium Member SMacB

location: South West England, United Kingdom

date approved: 5/8/2018

last visited: never

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

in U.K. and Ireland Trigpoints

Ordnance Survey trig pillar, constructed in 1952, high up on the heather moorlands of the eastern Grampians in the county of Angus.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 5/7/2018

last visited: never

Image for Bolt On Bridge 142 On Lancaster Canal - Yealand Redmayne, UKview gallery
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U.K. and Ireland TrigpointsBolt On Bridge 142 On Lancaster Canal - Yealand Redmayne, UK

in U.K. and Ireland Trigpoints

This bolt is on the arch stones of bridge 142 (Yealand Road Bridge) that carries Tarn Lane over the canal.

posted by: Groundspeak Premium Member dtrebilc

location: North West England, United Kingdom

date approved: 5/7/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework that wraps aroung a building at the junction of Greenwich Park Street and Trafalgar Road. The mark is on the south west face of the wall in Greenwich Park Street.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 5/7/2018

last visited: never

Total Records: 7049 Page: 1 of 282 prev<<<[12345678910]>>>next
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