U.K. and Ireland Trigpoints - A Waymarking.com Category

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U.K. and Ireland Trigpoints

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UK And Ireland Trigpoints Managers

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.
Use the approved UK Region Map to choose your Region: visit link

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.)
1GL 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.
CUT BENCHMARK A cut mark in stone/brick. Some have been found upside-down.
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.
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.
FLUSH BRACKET. These can be found on trig pillars, buildings, bridges etc. They all have an individual number, which you should log.
SURFACE BLOCK. A rivet set in a concrete base about 6 inches across (15cm) flush at ground level.
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.
PIVOT BENCH MARKS. A benchmark which has an empty hole above it. There is no horizontal mark.
PROJECTING BRACKET. These brackets are the predecessor to the Flush Bracket. 258 listed on OSBM.
BERNTSEN. Visible is a metal circular lid about 6 inches across (15cm) at ground level, covering a brass bolt.
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.
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
ACTIVE STATIONS contain a GPS receiver antenna and sometimes meteorological instruments. Active Station Map. (Not publicly listed by OS.) Find an Active Station.
CONCRETE RING with a centre stud. 2 feet (55cm) diameter. 6 known in the UK.
(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.
CENTRE is a small cross engraved in metal. There are 2 known in the UK.
GRAVITY FBM. Similar to a standard FBM, but bigger, and with a flush bracket. 4 known in the UK.
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.
Other survey marks.
ADMIRALTY HYDROGRAPHIC DEPARTMENT LEVEL MARKER. These markers are flat and about 6 inches across (15cm) , set in rock.
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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view gallery	Cut Mark - The Old Battery, Totland, Isle of Wight, UK in U.K. and Ireland Trigpoints Cut mark on the end of the concrete wall to the right of the steps. posted by: Dhows location: Southern England, United Kingdom date approved: 5/15/2013 last visited: never
view gallery	CBM on The Church of the Good Shepherd, Lullington, Sussex in U.K. and Ireland Trigpoints Cut bench mark on the smallest church in England posted by: dave-harris location: South East England, United Kingdom date approved: 5/14/2013 last visited: never
view gallery	Brown Edge Triangulation Pillar - Mossley - Greater Manchester in U.K. and Ireland Trigpoints Trig point on Brown Edge above the village of Mossley posted by: scubaclogger location: Northwest England, United Kingdom date approved: 5/13/2013 last visited: never
view gallery	Cut bench mark on a church, Station Road, Sidmouth, Devon in U.K. and Ireland Trigpoints A cut mark on a buttress of All Saints Church in All Saints Road. posted by: Four Cool Dudes location: South West England, United Kingdom date approved: 5/6/2013 last visited: never
view gallery	Benchmark, St John the Baptist, Belton, Leicestershire in U.K. and Ireland Trigpoints Cut benchmark on wall of church near South door posted by: SMacB location: East Midlands, United Kingdom date approved: 5/6/2013 last visited: never
view gallery	Cut bench mark with rivet on a wall, Station Road, Sidmouth, Devon in U.K. and Ireland Trigpoints Cut mark with rivet on a low wall beside Station Road. posted by: Four Cool Dudes location: South West England, United Kingdom date approved: 5/6/2013 last visited: never
view gallery	Cut Bench Mark & Bolt - The Terrace, Gravesend, Kent, UK in U.K. and Ireland Trigpoints This mark is cut into the south east corner of the Custom House building on the north side of The Terrace in Gravesend. posted by: Master Mariner location: South East England, United Kingdom date approved: 5/6/2013 last visited: never
view gallery	Cut Bench Mark - Royal Pier Road, Gravesend, Kent, UK in U.K. and Ireland Trigpoints This mark is cut into the wall at the southern end of the Royal Terrace Pier on the north side of Royal Pier Road in Gravesend. posted by: Master Mariner location: South East England, United Kingdom date approved: 5/5/2013 last visited: never
view gallery	Cut Bench Mark - Royal Pier Road, Gravesend, Kent, UK in U.K. and Ireland Trigpoints This mark is cut into the south face of the St Andrew's Art Centre on the north side of Royal Pier Road in Gravesend. posted by: Master Mariner location: South East England, United Kingdom date approved: 5/5/2013 last visited: never
view gallery	Cut bench mark on a church, Church Street, Sidmouth, Devon in U.K. and Ireland Trigpoints A cut bench mark on one buttress of the church of St Giles and St Nicholas. posted by: Four Cool Dudes location: South West England, United Kingdom date approved: 5/5/2013 last visited: never
view gallery	Cut bench mark on a shelter, The Esplanade, Sidmouth, Devon in U.K. and Ireland Trigpoints A cut bench mark on one of the shelters on The Esplanade. posted by: Four Cool Dudes location: South West England, United Kingdom date approved: 5/5/2013 last visited: never
view gallery	Cut bench mark on milestone, Station Road, Sidmouth, Devon in U.K. and Ireland Trigpoints Cut bench mark on milestone beside Station Road, Sidmouth, Devon. The milestone indicates that it is 6 miles from Ottery St Mary. posted by: Four Cool Dudes location: South West England, United Kingdom date approved: 5/5/2013 last visited: never
view gallery	Cut Bench Mark - Stone Street, Gravesend, Kent, UK in U.K. and Ireland Trigpoints This mark is cut into a red brick wall on the west side of Stone Street in central Gravesend. posted by: Master Mariner location: South East England, United Kingdom date approved: 5/5/2013 last visited: never
view gallery	Cut Bench Mark - Terrace Street, Gravesend, Kent, UK in U.K. and Ireland Trigpoints This mark is cut into the wall of a public house on the north side of Terrace Street at the junction with Queen Street. posted by: Master Mariner location: South East England, United Kingdom date approved: 5/5/2013 last visited: never
view gallery	Cut bench mark on wall, Cotmaton Road, Sidmouth, Devon in U.K. and Ireland Trigpoints A cut bench mark on a wall in Cotmaton Road, at the boundary of Eagle Hurst Lodge. posted by: Four Cool Dudes location: South West England, United Kingdom date approved: 5/4/2013 last visited: never
view gallery	Cut bench mark on stone gate post on Station Road, Sidmouth, Devon in U.K. and Ireland Trigpoints A cut bench mark on a stone gatepost on Station Road, at an old entrance to a public park, which looks like it was once part of the gardens of an old house. posted by: Four Cool Dudes location: South West England, United Kingdom date approved: 5/4/2013 last visited: never
view gallery	Cut bench mark - Lower Mincombe Farm, near Sidbury, Devon in U.K. and Ireland Trigpoints The mark is on the south corner of a farm building adjacent to the road. posted by: Four Cool Dudes location: South West England, United Kingdom date approved: 5/4/2013 last visited: never
view gallery	Cut Bench Mark & Bolt - St George's Church, Church Street, Gravesend, Kent, UK in U.K. and Ireland Trigpoints This cut mark and bolt is on the west end of St George's church. The mark is below a handrail on the north side of the doors. posted by: Master Mariner location: South East England, United Kingdom date approved: 4/29/2013 last visited: never
view gallery	Cut Bench Mark - The Old Town Hall, Gravesend, Kent, UK in U.K. and Ireland Trigpoints The mark is cut into the front of the Old Town Hall on the east side of Gravesend High Street. posted by: Master Mariner location: South East England, United Kingdom date approved: 4/28/2013 last visited: never
view gallery	Cut Bench Mark - Parrock Street, Gravesend, Kent, UK in U.K. and Ireland Trigpoints The mark is cut into the wall of the bridge on the east side of Parrock Street just to the north of the junction with Saddington Street. posted by: Master Mariner location: South East England, United Kingdom date approved: 4/28/2013 last visited: never
view gallery	Flush Bracket - West Crescent Road, Gravesend, Kent, UK in U.K. and Ireland Trigpoints The bracket is on the west side of West Crescent Road and is fitted to the Methodist chapel. posted by: Master Mariner location: South East England, United Kingdom date approved: 4/28/2013 last visited: never
view gallery	Cut Bench Mark & Bolt - New Street, London, UK in U.K. and Ireland Trigpoints This mark is cut into an old warehouse wall on the south west side of New Street that runs south east from Liverpool Street station. posted by: Master Mariner location: London, United Kingdom date approved: 4/21/2013 last visited: never
view gallery	Cut Bench Mark - City Road, London, UK in U.K. and Ireland Trigpoints This mark is cut into a post at the southern end of the Bunhill Field Burial Ground in City Road next to the impressive former home of the Honourable Artillery Company. posted by: Master Mariner location: London, United Kingdom date approved: 4/18/2013 last visited: never
view gallery	Mardy trigpoint - near Cardiff, Wales, UK in U.K. and Ireland Trigpoints This trig pillar sits on the foreshore not far from the mouth of the River Rumney just to the east of Cardiff. posted by: Superted location: South Wales, United Kingdom date approved: 4/18/2013 last visited: 4/27/2013
view gallery	Cut bench mark and bolt - St Andrews Church, North Burlingham, Norfolk in U.K. and Ireland Trigpoints Cut bench mark and bolt on the flint tower of this old church at North Burlingham in Norfolk. posted by: Norfolk12 location: Eastern England, United Kingdom date approved: 4/16/2013 last visited: never

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