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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: 6475 Page: 1 of 259 prev<<<[12345678910]>>>next
Image for Cut Mark On Bridge 66 Over Macclesfield Canal - Congleton, UKview gallery
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U.K. and Ireland TrigpointsCut Mark On Bridge 66 Over Macclesfield Canal - Congleton, UK

in U.K. and Ireland Trigpoints

This cut mark is on the north face of bridge 66 over the Macclesfield Canal near Congleton.

posted by: Groundspeak Premium Member dtrebilc

location: Northwest England, United Kingdom

date approved: 4/23/2016

last visited: never

Image for S.Mary, Helmingham Road (B1077), Helmingham, Suffolk. IP14 6EQview gallery
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U.K. and Ireland TrigpointsS.Mary, Helmingham Road (B1077), Helmingham, Suffolk. IP14 6EQ

in U.K. and Ireland Trigpoints

A slightly distorted cut-mark on this Suffolk parish church

posted by: Groundspeak Premium Member greysman

location: South East England, United Kingdom

date approved: 4/21/2016

last visited: never

Image for St.Peter's Church, The Street, Cretingham, Suffolk, IP13 7BGview gallery
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U.K. and Ireland TrigpointsSt.Peter's Church, The Street, Cretingham, Suffolk, IP13 7BG

in U.K. and Ireland Trigpoints

Almost lost to the ravages of time, this cut mark is almost gone.

posted by: Groundspeak Premium Member greysman

location: South East England, United Kingdom

date approved: 4/19/2016

last visited: never

Image for St.Botolph's Church, B1079, Burgh, Suffolk. IP13 6QAview gallery
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U.K. and Ireland TrigpointsSt.Botolph's Church, B1079, Burgh, Suffolk. IP13 6QA

in U.K. and Ireland Trigpoints

Well worn cut mark on the church tower.

posted by: Groundspeak Premium Member greysman

location: South East England, United Kingdom

date approved: 4/19/2016

last visited: never

Image for St.Giles Cathedral, High St., Edinburgh, Scotland. EH1 1REview gallery
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U.K. and Ireland TrigpointsSt.Giles Cathedral, High St., Edinburgh, Scotland. EH1 1RE

in U.K. and Ireland Trigpoints

A nice, clean cut-mark on the western side of the north entrance to St.Giles.

posted by: Groundspeak Premium Member greysman

location: Southern Scotland, United Kingdom

date approved: 4/9/2016

last visited: never

Image for Benchmark - St Bartholomew - Quorn, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Bartholomew - Quorn, Leicestershire

in U.K. and Ireland Trigpoints

Cut benchmark on St Bartholomew's church tower, Quorn. LE12 8DP

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 4/3/2016

last visited: never

Image for Benchmark - St Mary - Queniborough, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Mary - Queniborough, Leicestershire

in U.K. and Ireland Trigpoints

Cut benchmark on the buttress of St Mary's church tower, Queniborough. LE7 3DZ

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 4/3/2016

last visited: never

Image for Benchmark - St John the Baptist - South Croxton, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - St John the Baptist - South Croxton, Leicestershire

in U.K. and Ireland Trigpoints

Cut benchmark on the church tower, St John the Baptist, South Croxton. LE7 3RJ

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/31/2016

last visited: never

Image for Cut Bench Mark - St Peter's Church Oare, Kent. ME13 0TRview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - St Peter's Church Oare, Kent. ME13 0TR

in U.K. and Ireland Trigpoints

A cut bench mark on the Grade 1 listed St Peter's Church, Church Road Oare, Kent. ME13 0TR

posted by: Groundspeak Premium Member MeerRescue

location: South East England, United Kingdom

date approved: 3/31/2016

last visited: never

Image for Benchmark - St Peter - Tilton on the Hill, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Peter - Tilton on the Hill, Leicestershire

in U.K. and Ireland Trigpoints

Cut benchmark on St Peter's church clock tower, Tilton on the Hill. LE7 9LB

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/30/2016

last visited: never

Image for Benchmark - Farm building, Main Road - Wardley, Rutlandview gallery
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U.K. and Ireland TrigpointsBenchmark - Farm building, Main Road - Wardley, Rutland

in U.K. and Ireland Trigpoints

Cut benchmark on the corner of a farm building on Main Street, Wardley. LE15 9AZ

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 3/28/2016

last visited: never

Image for Benchmark - St Botolph - Wardley, Rutlandview gallery
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U.K. and Ireland TrigpointsBenchmark - St Botolph - Wardley, Rutland

in U.K. and Ireland Trigpoints

Cut benchmark on south east corner of St Botolph's church, Wardley. LE15 9AZ

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/28/2016

last visited: never

Image for Flush Bracket S9812 - St Peter & St Paul - Uppingham, Rutlandview gallery
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U.K. and Ireland TrigpointsFlush Bracket S9812 - St Peter & St Paul - Uppingham, Rutland

in U.K. and Ireland Trigpoints

Flush bracket S9812 on St Peter & St Pauls church, Uppingham. North west angle, south face of buttress. LE15 9QH

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/28/2016

last visited: never

Image for Benchmark, St Peter's church - Allexton, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark, St Peter's church - Allexton, Leicestershire

in U.K. and Ireland Trigpoints

A cut benchmark on the south porch of St Peter's church, Allexton. South west angle, west face. Church no longer in use. LE15 9AB

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/27/2016

last visited: never

Image for Flush Bracket S093 - Church Road - Trimingham, Norfolkview gallery
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U.K. and Ireland TrigpointsFlush Bracket S093 - Church Road - Trimingham, Norfolk

in U.K. and Ireland Trigpoints

Flush Bracket S093 on the corner of churchyard wall, north west corner, north face. Church Street, Trimingham. NR11 8EG

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 3/27/2016

last visited: never

Image for Benchmark & 1GL Bolt - St John the Baptist's Head - Triminghamview gallery
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U.K. and Ireland TrigpointsBenchmark & 1GL Bolt - St John the Baptist's Head - Trimingham

in U.K. and Ireland Trigpoints

Cut benchmark & 1GL bolt on the north-west corner of St John the Baptist's Head church tower. NR11 8EG

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 3/27/2016

last visited: never

Image for Benchmark - All Saints - Mundesley, Norfolkview gallery
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U.K. and Ireland TrigpointsBenchmark - All Saints - Mundesley, Norfolk

in U.K. and Ireland Trigpoints

Cut benchmark on south west angle of west face of church porch, All Saints, Mundesley.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 3/27/2016

last visited: never

Image for Benchmark - St Catharine - Houghton on the Hill, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - St Catharine - Houghton on the Hill, Leicestershire

in U.K. and Ireland Trigpoints

Cut benchmark on the north west corner of St Catharine's church tower, Houghton on the Hill.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 3/27/2016

last visited: never

Image for Cut Mark, St Garmons Church, Llanarmon M.M, Powys, Wales, UKview gallery
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U.K. and Ireland TrigpointsCut Mark, St Garmons Church, Llanarmon M.M, Powys, Wales, UK

in U.K. and Ireland Trigpoints

A cut mark on the south Western corner of the main door arch cut into the arch.

posted by: Groundspeak Premium Member Ddraig Ddu

location: North Wales, United Kingdom

date approved: 3/26/2016

last visited: never

Image for Flush Bracket, Hermon Calvinistic Methodist Chapel, Llanarmon M.M, Powys, Wales, UKview gallery
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U.K. and Ireland TrigpointsFlush Bracket, Hermon Calvinistic Methodist Chapel, Llanarmon M.M, Powys, Wales, UK

in U.K. and Ireland Trigpoints

A flush bracket (number 12040) in the side of a Calvinistic Methodist Chapel in Llanarmon Mynydd Mawr, a small village of less than a hundred people, although numbers have dropped over the years.

posted by: Groundspeak Premium Member Ddraig Ddu

location: North Wales, United Kingdom

date approved: 3/26/2016

last visited: never

Image for Benchmark - St Margaret - Paston, Norfolkview gallery
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U.K. and Ireland TrigpointsBenchmark - St Margaret - Paston, Norfolk

in U.K. and Ireland Trigpoints

Cut benchmark on the north east face, north angle, of St Margaret's church, Paston.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 3/26/2016

last visited: never

Image for Triangulation Pillar, Cadair Idris, Gwynedd, Wales, UKview gallery
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U.K. and Ireland TrigpointsTriangulation Pillar, Cadair Idris, Gwynedd, Wales, UK

in U.K. and Ireland Trigpoints

A Triangulation Pillar at the summit of Cadair Idris in the Snowdonia range.

posted by: Groundspeak Premium Member Ddraig Ddu

location: North Wales, United Kingdom

date approved: 3/26/2016

last visited: never

Image for Triangulation Pillar, Pentre'r Beirdd, Powys, Wales, UKview gallery
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U.K. and Ireland TrigpointsTriangulation Pillar, Pentre'r Beirdd, Powys, Wales, UK

in U.K. and Ireland Trigpoints

A Triangulation Pillar at the top of a hill north of Pentre'r Beirdd.

posted by: Groundspeak Premium Member Ddraig Ddu

location: North Wales, United Kingdom

date approved: 3/25/2016

last visited: never

Image for Benchmark - St Mary - Martham, Norfolkview gallery
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U.K. and Ireland TrigpointsBenchmark - St Mary - Martham, Norfolk

in U.K. and Ireland Trigpoints

Cut benchmark on St Mary's church tower, Martham. NR29 4PR

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 3/25/2016

last visited: never

Image for Benchmark - St Peter - Ridlington, Norfolkview gallery
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U.K. and Ireland TrigpointsBenchmark - St Peter - Ridlington, Norfolk

in U.K. and Ireland Trigpoints

Cut benchmark on the tower of St Peter's church, Ridlington.

posted by: Groundspeak Premium Member SMacB

location: Eastern England, United Kingdom

date approved: 3/25/2016

last visited: never

Total Records: 6475 Page: 1 of 259 prev<<<[12345678910]>>>next
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