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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: 6427 Page: 1 of 258 prev<<<[12345678910]>>>next
Image for Cut Bench Mark - Aylward Street, London, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Aylward Street, London, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a former police station at the junction of Aylward Street and East Arbour Street, The mark is on the Aylward Street (north) face of the building at its north east corner.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 2/1/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a block of flats known as Solent House. The mark is on the south east face of the building, at the entrance to the car park, on the east side of Whitehorse Road.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 2/1/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of St Dunstan's and All Saints church on the east side of Stepney High Street. The mark is cut into the east face of a buttress on the south side of the building.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 1/31/2016

last visited: never

Image for Benchmark - Town Hall - Loughborough, Leicestershireview gallery
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U.K. and Ireland TrigpointsBenchmark - Town Hall - Loughborough, Leicestershire

in U.K. and Ireland Trigpoints

A cut bemchmark on the Town Hall building in Loughborough marketplace.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 1/24/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building that is at the junction of High Street and Lime Street in Bedford. The mark is in Lime Street on the south face of the building.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 1/18/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into a brick post at the end of a dividing wall. The mark is on the north west side of Kimbolton Road in Bedford.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 1/18/2016

last visited: never

Image for Cut Bench Mark - The Broadway, Bedford, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - The Broadway, Bedford, UK

in U.K. and Ireland Trigpoints

This mark is cut into the front of a business on the south west side of The Broadway in Bedford.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 1/18/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building at the junction of Tavistock Street and The Crescent. The mark is on the north east face of the building in Tavistock Street.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 1/18/2016

last visited: never

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

in U.K. and Ireland Trigpoints

The mark is cut into a brick wall at the junction of Ashburnham Road and Woburn Road. The mark is on the Ashburnham Road face just at the point where the wall starts to curve.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 1/18/2016

last visited: never

Image for Cut Bench Mark On St. Petersgate - Stockport, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark On St. Petersgate - Stockport, UK

in U.K. and Ireland Trigpoints

This cut mark is on the side of a building next to steps that descend from St. Petersgate Bridge to Underbank, the road that passes under the bridge.

posted by: Groundspeak Premium Member dtrebilc

location: Northwest England, United Kingdom

date approved: 1/18/2016

last visited: never

Image for Cut Mark and Rivet - Park View Road, London, UKview gallery
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U.K. and Ireland TrigpointsCut Mark and Rivet - Park View Road, London, UK

in U.K. and Ireland Trigpoints

The cut mark and rivet are on top of a stone on the south west side of Park View Road. The stone may, at some time, have been a milepost of boundary marker but there are no visible inscriptions.

posted by: Groundspeak Premium Member Master Mariner

location: London, United Kingdom

date approved: 1/14/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building on the south side of Bateman Street in Cambridge. The mark is roughly a third of the length of Bateman Street from the Brookside end.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 1/14/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building at the junction of Bateman Street and Brookside. The mark is on the south side of Bateman Street on the north face of the building.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 1/14/2016

last visited: never

Image for Cut Bench Mark - Pemberton Terrace, Cambridge, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - Pemberton Terrace, Cambridge, UK

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building at the junction of Brookside and Pemberton Terrace. The mark is on the northern face of the building in Pemberton Terrace.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 1/13/2016

last visited: never

Image for Cut Bench Mark and Bolt - Trumpington Street, Cambridge, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark and Bolt - Trumpington Street, Cambridge, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of the north gate post of the northernmost entrance to the grounds of the Fitzwilliam Museum.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 1/13/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building on the north east side of Trumpington Street opposite the Fitzwilliam Museum. The building is adjacent to a vehicle entrance to a university building.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 1/13/2016

last visited: never

Image for Cut Bench Mark - King's Parade, Cambridge, UKview gallery
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U.K. and Ireland TrigpointsCut Bench Mark - King's Parade, Cambridge, UK

in U.K. and Ireland Trigpoints

This mark is cut into the stonework of the entrance lodge to King's College. The mark is on the east face of the building to the north of the entrance gate.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 1/12/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the brickwork of a building on the north west side of Jesus Lane in Cambridge.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 1/12/2016

last visited: never

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

in U.K. and Ireland Trigpoints

This mark is cut into the end wall of a building at the junction of Maids Causeway and Fair Street. The mark is on the Fair Street face of the building on the east side of the street.

posted by: Groundspeak Premium Member Master Mariner

location: Eastern England, United Kingdom

date approved: 1/11/2016

last visited: never

Image for Triangulation Pillar S4611 - Paudy Cross Roads, Nr Seagrave, Leicestershireview gallery
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U.K. and Ireland TrigpointsTriangulation Pillar S4611 - Paudy Cross Roads, Nr Seagrave, Leicestershire

in U.K. and Ireland Trigpoints

Triangulation pillar S4611 at Paudy Cross Roads, on the right hand side (NE) of Big Lane.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 1/10/2016

last visited: never

Image for Loughborough Carillon Vane - Queens Park - Loughborough, Leicestershireview gallery
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U.K. and Ireland TrigpointsLoughborough Carillon Vane - Queens Park - Loughborough, Leicestershire

in U.K. and Ireland Trigpoints

An intersected station at the Loughborough Carillon Vane in Queens Park, Loughborough.

posted by: Groundspeak Premium Member SMacB

location: East Midlands, United Kingdom

date approved: 1/9/2016

last visited: never

Image for Kingston St Mary Church Cut Bench Mark in the county of Somersetview gallery
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U.K. and Ireland TrigpointsKingston St Mary Church Cut Bench Mark in the county of Somerset

in U.K. and Ireland Trigpoints

Cut bench mark

posted by: Groundspeak Premium Member dave.johnson

location: South West England, United Kingdom

date approved: 1/6/2016

last visited: 1/2/2016

Image for Church of St. Mary Magdalen Cut bench mark, cricket Malherbie in the county of Somersetview gallery
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U.K. and Ireland TrigpointsChurch of St. Mary Magdalen Cut bench mark, cricket Malherbie in the county of Somerset

in U.K. and Ireland Trigpoints

Cut bench mark

posted by: Groundspeak Premium Member dave.johnson

location: South West England, United Kingdom

date approved: 1/2/2016

last visited: 12/29/2015

Image for Flush Bracket S0690 - St Michael - Sittingbourne, Kentview gallery
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U.K. and Ireland TrigpointsFlush Bracket S0690 - St Michael - Sittingbourne, Kent

in U.K. and Ireland Trigpoints

A flush bracket at the south west angle of the entrance to St Michael's church, Sittingbourne.

posted by: Groundspeak Premium Member SMacB

location: South East England, United Kingdom

date approved: 12/29/2015

last visited: never

Image for Flush Bench Mark - St Llawddog's Church - Cenarth, Carmarthenshire, Walesview gallery
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U.K. and Ireland TrigpointsFlush Bench Mark - St Llawddog's Church - Cenarth, Carmarthenshire, Wales

in U.K. and Ireland Trigpoints

St Llawddog's Church - A Grade II listed church, built in 1872 to replace an earlier medieval building. This Flush Bracket number 'OS-BM 0661S' is found to the left of South entrance to the Church. located in Cenarth, Carmarthenshire, South Wales.

posted by: Groundspeak Premium Member veritas vita

location: South Wales, United Kingdom

date approved: 12/29/2015

last visited: 12/30/2015

Total Records: 6427 Page: 1 of 258 prev<<<[12345678910]>>>next
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