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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: 6948 Page: 1 of 278 prev<<<[12345678910]>>>next
Image for Cut Bench Mark - Kensal Green Cemetery, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Kensal Green Cemetery, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a wall supporting entrance gates into Kensal Green Cemetery.

posted by: Groundspeak Regular Member Master Mariner

location: London, United Kingdom

date approved: 1/15/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a wall on the south side of Harrow Road near to an entrance to Kensal Green Cemetery.

posted by: Groundspeak Regular Member Master Mariner

location: London, United Kingdom

date approved: 1/15/2018

last visited: never

Image for Cut Bench Mark and Bolt - St John the Evangelist Church, Harrow Road, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark and Bolt - St John the Evangelist Church, Harrow Road, London, UK

in U.K. and Ireland Trigpoints

This cut mark and bolt are on the south west face of St John the Evangelist Church on the north east side of Harrow Road. The mark is cut into the church's stonework to the right of the entrance door.

posted by: Groundspeak Regular Member Master Mariner

location: London, United Kingdom

date approved: 1/15/2018

last visited: never

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

in U.K. and Ireland Trigpoints

The mark is cut into the north face of a terrace of houses on the east side of Bunhill Row with the mark being at the north west corner.

posted by: Groundspeak Regular Member Master Mariner

location: London, United Kingdom

date approved: 1/15/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of the Burlington Road Gate entrance to Chiswick House and Gardens. The mark is to the left of the arch when facing the gardens.

posted by: Groundspeak Regular Member Master Mariner

location: London, United Kingdom

date approved: 1/15/2018

last visited: never

Image for Benchmark - Beeston Methodist Church - Beeston, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - Beeston Methodist Church - Beeston, Nottinghamshire

in U.K. and Ireland Trigpoints

A cut benchmark on the south east corner of Beeston Methodist church tower, Chilwell Road.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 1/15/2018

last visited: never

Image for Rivet - Bandstand, Dovecote Lane Recreation Park - Beeston, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsRivet - Bandstand, Dovecote Lane Recreation Park - Beeston, Nottinghamshire

in U.K. and Ireland Trigpoints

A rivet on the south face of the bandstand in Dovecote Lane Recreation Park, Beeston.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 1/15/2018

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork at the north corner of Chiswick Station House at Chiswick railway station.

posted by: Groundspeak Regular Member Master Mariner

location: London, United Kingdom

date approved: 1/15/2018

last visited: never

Image for Benchmark & 1GL Bolt - St John the Baptist - Beeston, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark & 1GL Bolt - St John the Baptist - Beeston, Nottinghamshire

in U.K. and Ireland Trigpoints

A cut benchmark & 1GL Bolt on the church tower of St John the Baptist, Beeston.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 1/7/2018

last visited: never

Image for Cancelled Benchmark - St John the Baptist - Beeston, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsCancelled Benchmark - St John the Baptist - Beeston, Nottinghamshire

in U.K. and Ireland Trigpoints

A cancelled cut benchmark on a buttress on the south east angle of the south aisle of St John the Baptist church, Beeston. Not on OS database or old-maps.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 1/7/2018

last visited: never

Image for O.S. Triangulation Pillar - Pitarris Hill, Angusview gallery
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U.K. and Ireland TrigpointsO.S. Triangulation Pillar - Pitarris Hill, Angus

in U.K. and Ireland Trigpoints

Ordnance Survey trig pillar on the heights of Rossie Moor, around four miles south-west of the Angus coastal town of Montrose.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 1/7/2018

last visited: never

Image for Benchmark - Boots D31, Boots Campus, Second Ave - Beeston, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - Boots D31, Boots Campus, Second Ave - Beeston, Nottinghamshire

in U.K. and Ireland Trigpoints

A cut benchmark on the corner of the Boots D31 building, Second Avenue, Beeston.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 1/7/2018

last visited: never

Image for O.S. Triangulation Pillar - Red Head, Angus.view gallery
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U.K. and Ireland TrigpointsO.S. Triangulation Pillar - Red Head, Angus.

in U.K. and Ireland Trigpoints

Ordnance Survey trig pillar, constructed in 1948, perched on the cliffedge of the North Sea on the Angus coast north of Arbroath.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 1/2/2018

last visited: never

Image for Benchmark - Station Street - Nottingham, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - Station Street - Nottingham, Nottinghamshire

in U.K. and Ireland Trigpoints

A cut benchmark on Station Street at the entrance to the Former Parcels Office, Nottingham.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 12/29/2017

last visited: never

Image for Benchmark - Red Dog Saloon, Victoria Street - Nottingham, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - Red Dog Saloon, Victoria Street - Nottingham, Nottinghamshire

in U.K. and Ireland Trigpoints

A cut benchmark on the north east corner of the Red Dog Saloon, Victoria Street, Nottingham.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 12/27/2017

last visited: never

Image for Benchmark - The Arboretum, Waverley Street - Nottingham, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - The Arboretum, Waverley Street - Nottingham, Nottinghamshire

in U.K. and Ireland Trigpoints

A cut benchmark near the Waverley Street entrance to The Arboretum, Nottingham.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 12/25/2017

last visited: never

Image for Benchmark - Addison Road Bridge, The Arboretum - Nottingham, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - Addison Road Bridge, The Arboretum - Nottingham, Nottinghamshire

in U.K. and Ireland Trigpoints

A cut benchmark on the pedestrian underpass at the east end of Nottingham Arboretum.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 12/16/2017

last visited: never

Image for Benchmark - St Mary's Rest Garden - Nottingham, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Mary's Rest Garden - Nottingham, Nottinghamshire

in U.K. and Ireland Trigpoints

A cut benchmark on the right hand side gatepost at the entrance to the St Mary's Rest Garden from Bath Street, at the junction with St Ann's Well Street.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 12/15/2017

last visited: never

Image for Benchmark - Bancroft Buildings - Nottingham, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - Bancroft Buildings - Nottingham, Nottinghamshire

in U.K. and Ireland Trigpoints

A cut benchmark on the old Bancroft Buildings, a former silk factory on the corner of Robin Hood Street and Roden Street, Nottingham.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 12/15/2017

last visited: never

Image for Benchmark - Parliament Street Bus Depot - Nottingham, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - Parliament Street Bus Depot - Nottingham, Nottinghamshire

in U.K. and Ireland Trigpoints

A cut benchmark on the stone jamb of the doors to the bus depot on Southwell Road, Nottingham.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 12/15/2017

last visited: never

Image for Benchmark - St George - Barton in Fabis, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - St George - Barton in Fabis, Nottinghamshire

in U.K. and Ireland Trigpoints

A cut benchmark, damaged, on the south west corner of St George's church tower, Barton in Fabis.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 12/5/2017

last visited: never

Image for Benchmark - All Saints - Thrumpton, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - All Saints - Thrumpton, Nottinghamshire

in U.K. and Ireland Trigpoints

Cut benchmark on the south side of All Saints' church tower, Thrumpton.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 11/30/2017

last visited: never

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

in U.K. and Ireland Trigpoints

Ordnance Survey trig pillar, constructed in 1950, in the Perthshire countryside 4 miles north-west of Perth.

posted by: Groundspeak Regular Member creg-ny-baa

location: Northern Scotland, United Kingdom

date approved: 11/30/2017

last visited: never

Image for Rivet At Lock 33 On Rochdale Canal - Walsden, UKview gallery
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U.K. and Ireland TrigpointsRivet At Lock 33 On Rochdale Canal - Walsden, UK

in U.K. and Ireland Trigpoints

This rivet is on the towpath next to the bottom lock gates.

posted by: Groundspeak Premium Member dtrebilc

location: Yorkshire, United Kingdom

date approved: 11/26/2017

last visited: never

Image for Benchmark - Fellows, Morton & Clayton, Canal Street - Nottingham, Nottinghamshireview gallery
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U.K. and Ireland TrigpointsBenchmark - Fellows, Morton & Clayton, Canal Street - Nottingham, Nottinghamshire

in U.K. and Ireland Trigpoints

A cut benchmark, damaged, on the north east corner of Fellows, Morton & Clayton public house, No. 54 Canal Street, Nottingham

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 11/21/2017

last visited: never

Total Records: 6948 Page: 1 of 278 prev<<<[12345678910]>>>next
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