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Explanation of Types

Type Description Examples
Flush Bracket These are rectangular metal plates affixed to triangulation pillars, walls, buildings etc. If they are not affixed to a triangulation pillar they are often referred to as Non-Pillar Flush Brackets (NPFB). They are about 6" x 3" in size and the location of most of them is known through Ordnance Survey (OS) records. Each Flush Bracket (FB) has a unique serial number which makes them highly 'collectable' and there are several numbering types.  
  One to four figure number
The earliest FBs you can find and date from 1912-1921. Numbered from 1-3000. A few can be found on triangulation pillars.
5
  S-prefix
Introduced in the 1920s these are found on pillars and as NPFBs. There are two sub-types, S below the number and S left of the number.
S0950
S8628
  G-prefix
First appeared in 1936. Unlike S-series brackets numbers below 1000 do not have leading zeroes. Used extensively in Scotland and never found on triangulation pillars.
G3646
  L-prefix
Just sixteen brackets used in London in the early 1930s.
 
  Five figure number
These are effectively S-series brackets above S9999 where they ran out of room for the S (S-below was discontinued as the S interfered with the measuring equipment).
11328
Projecting Bracket An early type of metal bracket used for a short time before the introduction of flush brackets. They are all the same and have no unique attributes. Reading, Greyfriar's Church
OSBM Bolt Used alongside the G-series of flush brackets these are placed where there wasn't a convenient building or wall to provide a vertical surface on which to affix a flush bracket. They are domed metal bolts about 1" (50-60mm) in diameter fixed to horizontal surfaces engraved with OSBM and the benchmark symbol. Caban Coch Dam
Cut Bench Mark By far the most common type. Used and made from the 1800s to around 20 years ago. You won't have to walk (or drive) very far in any village, town or city in Britain before you spot one of these. Chiseled into stone, brick or wood on all sorts of vertical structures. A familiar horizontal levelling line with a three line arrow pointing towards it (usually upwards). Each one is unique depending on the mason who cut it, some are plain, some decorated. Some roughly cut, some exquisitely cut with high accuracy. Some small, some huge. Wallingford, 60 High Street
Cut Bench Mark with Bolt Old and rare these have a metal bolt screwed either alongside the horizontal cut of a cut bench mark or at the point of the cut arrowhead. Usually has what appears as a screwhead horizontal in the head of the bolt. These are highly prized by benchmarkers. Dorchester Abbey
Rivet Usually found on horizontal surfaces these are cut marks with a small metal domed brass rivet at the apex of the cut arrowhead marks. Swyncombe, Icknield Field
Pivot Fairly rare these are used on horizontal surfaces such as soft sandstone, where the insertion of a rivet would break away the stone. They consist of a small hole or depression cut to take a pivot, a steel ball bearing of 5/8" diameter (16mm). In use, the pivot is placed in the depression and the levelling staff held on top of the pivot. Sutton Bridge
Fundamental Bench Mark These are the key to the whole levelling of the UK. Granite blocks with large domed metal caps. Just like an iceberg this is just the tip of a fairly extensive underground structure. Highly accurate height stations still used today as the baseline to levelling. Conwy
Triangulation Pillar Familiar to anyone who walks in the British countryside, these can often (but not always) be found at hilltops. Most have a flush bracket affixed to one side. Huntingland
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2017

September 2017
UnknownPlymouth, Boons Place
Cut Bench MarkPlymouth, 232 North Road West
Cut Bench Mark with BoltPlymouth, North Road Railway Bridge
Cut Bench MarkPlymouth, St Dunstan's Abbey School
Cut Bench MarkPlymouth, North Road West
RivetPlymouth, 246 Cecil Street
Cut Bench MarkPlymouth, Noah's Ark Childcare Centre
DestroyedPlymouth, Duke of Somerset
Cut Bench Mark with BoltPlymouth, St Peter's Church
DestroyedPlymouth, 11 Wyndham Street West
DestroyedPlymouth, Notre Dame Convent High School
Cut Bench MarkPlymouth, 119-120 King Street
DestroyedPlymouth, 12-14 Octagon Street
June 2017
Cut Bench MarkBath, Royal Avenue, East Gates
Cut Bench MarkBath, 2 Gay Street
Cut Bench MarkBath, 27 Queen Square
Cut Bench MarkBath, 20 Queen Square
Cut Bench MarkBath, 13 Queen Square
Cut Bench MarkBath, 10 New King Street
Cut Bench MarkBath, 17 Charles Street
Cut Bench MarkBath, The Trinity
Cut Bench MarkBath, Westgate Buildings
Cut Bench MarkNottingham, Platform One Practice, Station Street
Cut Bench MarkNottingham, Station Street opp. Waterfront House
Cut Bench MarkNottingham, Seven Arches Bridge
Cut Bench MarkNottingham, The Hicking Building, Queens Road
Cut Bench MarkCholsey, 59 Wallingford Road
Flush BracketG2612 - Ffestiniog, Tal-y-bont
Flush BracketS0436 - Bala, Old School
Flush Bracket11443 - Ffestiniog, Pont Yr Afon Gam
May 2017
Cut Bench MarkEdinburgh, 1 Elm Row
UnknownEdinburgh, 10 Blenheim Place
PivotEdinburgh, Greenside Church
Cut Bench MarkEdinburgh, Greenside Church Path
PivotEdinburgh, Calton Hill Blocked Entrance
Cut Bench MarkEdinburgh, Calton Hill Stone
Cut Bench MarkEdinburgh, Hume Walk
Cut Bench MarkEdinburgh, Calton Hill Garden Wall
Triangulation PillarS3006 - Calton Hill
Cut Bench Mark with BoltEdinburgh, Nelson Monument
Cut Bench Mark with BoltEdinburgh, National Monument of Scotland
PivotEdinburgh, Calton Hill Path Junction
PivotEdinburgh, Calton Hill Steps
PivotEdinburgh, Regent Road / Hume Walk
Cut Bench MarkEdinburgh, Waterloo Place
Cut Bench MarkEdinburgh, 22 Hanover Street
UnknownEdinburgh, 12 Downie Terrace
Cut Bench MarkEdinburgh, Corstorphine Hospital
RivetEdinburgh, Pinkhill Station
Cut Bench MarkEdinburgh, Glendevon Park Railway Bridge
Cut Bench MarkEdinburgh, 1 Antigua Street
UnknownEdinburgh, The Cottage, West Princes Street Gardens
PivotEdinburgh, West Princes Street Gardens
PivotEdinburgh, The Mound
PivotEdinburgh, The Mound / Mound Place
Cut Bench MarkEdinburgh, 1 Mound Place
PivotEdinburgh, North Bank Street
Cut Bench MarkEdinburgh, Edinburgh Castle, Esplanade
Cut Bench MarkEdinburgh, Castle Wynd North
Cut Bench MarkEdinburgh, The Hub
PivotEdinburgh, Johnston Terrace / Upper Bow
DestroyedEdinburgh, Bedlam Theatre
Cut Bench MarkEdinburgh, Greyfriars Kirk
DestroyedEdinburgh, 27 Chambers Street
UnknownEdinburgh, Chambers Street
PivotEdinburgh, 125 George Street
DestroyedEdinburgh, 107 George Street
Cut Bench MarkEdinburgh, 91 Hanover Street
PivotEdinburgh, Queen Street / Queen Street Gardens East
Cut Bench MarkEdinburgh, 7 Queen Street
UnknownEdinburgh, Regent Road opp. Regent Terrace
Cut Bench MarkCockenzie, 74 High Street
Cut Bench MarkCockenzie, 1 Edinburgh Road
Cut Bench MarkPrestonpans, 17 High Street
Cut Bench MarkPrestonpans, Winfields, East Loan
DestroyedEdinburgh, 12 Gayfield Square
PivotEdinburgh, 21 Leith Street
Cut Bench MarkEdinburgh, Balmoral Hotel
PivotEdinburgh, Princes Street opp. 60 Princes Street
PivotEdinburgh, Princes Street opp. Tram Stop
PivotEdinburgh, Princes Street opp. Frederick Street
PivotEdinburgh, Princes Street opp. Castle Street
Cut Bench MarkEdinburgh, King George IV Monument
Cut Bench MarkEdinburgh, St Andrew's and St George's Church
Cut Bench MarkEdinburgh, National Portrait Gallery
Cut Bench MarkEdinburgh, St Paul's and St George's Church
Cut Bench MarkEdinburgh, 24 Broughton Street
DestroyedEdinburgh, 40 Broughton Street
PivotEdinburgh, Broughton Place Church
DestroyedAppleby, St Lawrence's Church
PivotAppleby, Kingdom Hall
Cut Bench MarkAppleby, Bongate House
Cut Bench MarkAppleby, Bongate
Cut Bench Mark with BoltAppleby, St Michael's Church
PivotAppleby, Jubilee Bridge
Cut Bench MarkAppleby, Scattergate
DestroyedAppleby, 6 Colby Lane
DestroyedAppleby, Shaws Wiend
Cut Bench MarkAppleby, High Cross
UnknownAppleby, The Ings
Cut Bench MarkAppleby, Banks Lane
DestroyedAppleby, Chapel Street
PivotAppleby, King George's Field
Cut Bench MarkAppleby, Post Office
Cut Bench MarkAppleby, Moot Hall
DestroyedAppleby, Low Cross
Flush Bracket1251 - Appleby, St Lawrence's Bridge
Cut Bench MarkAppleby, Battlebarrow
PivotAppleby, Belgravia
DestroyedAppleby, Long Marton Road Bridge
Cut Bench MarkAppleby, Barrowgarth Guest House
Cut Bench MarkAppleby, Garthheads Road
Cut Bench MarkAppleby, Station Road
Cut Bench MarkWitton, Brookvale Road Canal Bridge
RivetWalsall, Walsall Lock No 3
RivetWalsall, Walsall Lock No 2
UnknownWillenhall, Bentley Wharf Bridge
Cut Bench MarkWolverhampton, Low Level Station (SE)
Cut Bench MarkWolverhampton, Low Level Station (NW)
Cut Bench MarkSmethwick, Galton Valley Pumping Station
Cut Bench MarkSaunderton, Station Railway Bridge
DestroyedOxford, 270 Marlborough Road
April 2017
Cut Bench MarkNorthend, The School House
Cut Bench MarkTurville, St Mary's Church
Cut Bench MarkFingest, St Bartholomew's Church
Cut Bench MarkCadmore End, St Mary's Church
Cut Bench MarkCadmore End, Primary School
Cut Bench MarkPiddington, Milestone, Wycombe 4
Cut Bench MarkRadnage, Two Yews Cottage
Cut Bench MarkStokenchurch, St Peter and St Paul's Church
Cut Bench MarkLondon, Christ Church, Spitalfields
Cut Bench MarkCastle Rising, Castle Farm House
Cut Bench MarkCastle Rising, 29 Lynn Road
Cut Bench MarkCastle Rising, St Lawrence's Church
Flush BracketG4142 - Castle Rising, St Lawrence's Church
Cut Bench MarkNorth Elmham, County School Station
Cut Bench MarkWymondham, Abbey Church
Triangulation PillarS2141 - Massingham
Flush BracketG3198 - Harpley, April Cottage
UnknownG2964 - Castle Acre, 32 Town Lane
Cut Bench MarkCastle Acre, 26 High Street
Cut Bench MarkCastle Acre, Primary School
Cut Bench MarkCastle Acre, St James the Great Church
UnknownCastle Acre, Jubilee Bridge
DestroyedCastle Acre, 65 Bailey Street
Cut Bench MarkCastle Acre, 9 Bailey Street
Flush BracketG4144 - King's Lynn, Gaywood Bridge
Cut Bench MarkKing's Lynn, 56 High Street
Cut Bench MarkKing's Lynn, 26 High Street
Cut Bench MarkKing's Lynn, Union Lane
Flush BracketG4146 - King's Lynn, Post Office
Cut Bench Mark with BoltKing's Lynn, Greyfriars Tower
DestroyedKing's Lynn, Mill Fleet
DestroyedKing's Lynn, Stonegate Street
Cut Bench MarkKing's Lynn, The Maltings
Cut Bench MarkKing's Lynn, 30 Nelson Street
Cut Bench MarkKing's Lynn, 4 Nelson Street
Cut Bench Mark with BoltKing's Lynn, St Margaret's Church
Cut Bench MarkKing's Lynn, Town Hall
Cut Bench MarkKing's Lynn, Marriott's Warehouse
Cut Bench MarkKing's Lynn, College Lane
Cut Bench MarkKing's Lynn, Custom House
Cut Bench MarkKing's Lynn, 19 King Street
Cut Bench MarkKing's Lynn, Crown & Mitre
Cut Bench MarkKing's Lynn, 24 Tuesday Market Place
Cut Bench MarkKing's Lynn, Bishop's Lynn House
Cut Bench MarkKing's Lynn, St Nicholas' Chapel
Cut Bench MarkKing's Lynn, Red Mount Chapel
Flush BracketG4145 - King's Lynn, St John's Church
Cut Bench MarkKing's Lynn, Lynn Museum
Cut Bench MarkKing's Lynn, 16 Tower Street
Cut Bench MarkKing's Lynn, Railway Station
Cut Bench MarkHunstanton, St Edmund's Church
Cut Bench MarkHunstanton, Greevegate
UnknownHunstanton, Golden Lion Hotel
Cut Bench MarkHunstanton, Boston Square
Cut Bench MarkHunstanton, Bowling Green
DestroyedHunstanton, Rhianva Court
DestroyedHunstanton, 1 Clarence Road
DestroyedSalisbury, Dews Road Factory
DestroyedSalisbury, 40 New Canal
Cut Bench MarkSalisbury, Guildhall
Cut Bench MarkSalisbury, White Hart Hotel
Cut Bench MarkSalisbury, St Anne's Gate
Cut Bench MarkSalisbury, 10 North Walk
Cut Bench MarkSalisbury, 21 North Walk
Cut Bench MarkSalisbury, King's House
Cut Bench MarkSalisbury, North Canonry
Cut Bench MarkSalisbury, Mompesson House
Cut Bench MarkSalisbury, North Gate
Cut Bench MarkSalisbury, St Mary's Chambers
Cut Bench MarkSalisbury, 35 High Street
Cut Bench Mark with BoltSalisbury, St Thomas's Church
Cut Bench MarkSalisbury, City Library & Art Gallery
Cut Bench MarkSalisbury, Fisherton Bridge
Cut Bench MarkSalisbury, Summerlock Bridge
DestroyedSalisbury, 138 Fisherton Street
Cut Bench MarkSalisbury, St Paul's Church
Flush Bracket61 - Salisbury, Fisherton Street Railway Bridge
Cut Bench MarkSalisbury, Railway Station
Cut Bench MarkWestminster, Opposite 28 Boston Place
Cut Bench MarkWestminster, Opposite 8-10 Boston Place
March 2017
Cut Bench MarkOxford, 135 Marlborough Road
PivotOxford, Christchurch Meadow Sluice
Cut Bench MarkOxford, St Matthew's Church
February 2017
Cut Bench MarkOxford, 75 Sunningwell Road
Cut Bench MarkOxford, New Hinksey Primary School
Cut Bench MarkOxford, St John's Church
UnknownOxford, Hinksey Lake
Triangulation PillarHinksey Halt Footbridge
Cut Bench MarkOxford, Lake Street Community Centre
Triangulation PillarS1652 - Barton Stacey
Cut Bench MarkSwindon, Great Western Railway Works
Cut Bench MarkSwindon, National Monuments Record Office #2
Cut Bench MarkSwindon, National Monuments Record Office #3
Cut Bench MarkSwindon, National Monuments Record Office #1
Cut Bench MarkSwindon, National Monuments Record Office
Cut Bench MarkSwindon, Government Offices
Cut Bench MarkTwyford, Twyford Overbridge
Cut Bench MarkYork, Museum Gardens Entrance
UnknownYork, York Minster (Deep)
Cut Bench MarkYork, Station Avenue
Cut Bench MarkYork, York Railway Station
UnknownYork, The Royal York Hotel
Cut Bench MarkYork, Lendal Bridge
Cut Bench MarkYork, Lendal Tower
Cut Bench MarkYork, 2 Bootham
UnknownYork, Dean's Park (Deep)
Cut Bench MarkYork, St Michael le Belfrey
Cut Bench MarkYork, 68 Low Petergate
DestroyedYork, 50 Goodramgate
Cut Bench MarkYork, 27 Goodramgate
Cut Bench MarkYork, 20 Ogleforth
Cut Bench MarkYork, 5 Minster Yard
Cut Bench MarkYork, 10 Minster Yard
Cut Bench MarkYork, The Lodge, Precentor's Court
Cut Bench Mark with BoltYork, York Minster
Flush Bracket2423 - York, High Petergate
RivetYork, Duncombe Place
Cut Bench MarkYork, Lendal/Museum Street
UnknownYork, The Yorkshire Museum
RivetSouth Hinksey, Hinskey Stream Footbridge
RivetOxford, Devil's Backbone Bridge
January 2017
DestroyedAbingdon, 37 West St Helen Street
Cut Bench MarkNaunton, Foxhill
Cut Bench MarkChipping Campden, St Catharine's Church
Flush Bracket1761 - Chipping Campden, Sheep Street
Cut Bench MarkChipping Campden, High Street
Flush Bracket1760 - Chipping Campden, Wixey House
Cut Bench MarkChipping Campden, St James' Church
Flush Bracket1759 - Chipping Campden, The Corner House
Cut Bench MarkChipping Campden, Wold's End
Cut Bench MarkChipping Campden, Market Hall
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Explanation of Types
Flush BracketFlush Bracket(205)
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RivetRivet(96)
PivotPivot(58)
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UnknownUnknown(238)
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