Holyhead to Conwy
Third geodetic levelling, England & Wales.
Geodetic line G158.
Levelling Route
 |
FBM | Holyhead. |
118.7661ft |
SH 2411 8282 |
 |
S7558 | SW face, S angle of GPO |
- |
SH 2473 8270 |
 |
S7557 | SE angle of Railway Station Hotel |
- |
SH 2480 8217 |
 |
G4950 | NW face, 4' from N angle of 164 London Road |
- |
SH 2545 8167 |
 |
G4951 | NW face, 1' from N angle of Bridge Lodge, Penrhos, SW side of road |
- |
SH 2706 8056 |
 |
S7555 | NW face of Poor Law Institute, SW side of road |
- |
SH 2900 7947 |
 |
G4952 | S face, SW angle of Tabor Hall |
- |
SH 2948 8047 |
 |
G4953 | SE face, 1' from E angle of Ty Newydd Farm |
- |
SH 3097 8076 |
 |
BOLT | OSBM Bolt on concrete block at production of hedge, W side of road |
- |
SH 3176 8158 |
 |
S7554 | E face of buttress, SE angle of St Machraeth's Church |
- |
SH 3133 8311 |
 |
BOLT | OSBM Bolt on living rock, Penporth Field, 115' N of hedge, 145' S of hedge, W side of road |
- |
SH 3170 8472 |
 |
G4954 | NW face, N angle of Police Station |
- |
SH 3191 8611 |
 |
S7553 | NE face of church buttress |
- |
SH 3135 8689 |
 |
G4955 | SW face, S angle of Baptist Chapel, Rhyd Wyn |
- |
SH 3148 8897 |
 |
G4956 | N face, NW angle of Bryn Hyfryd House |
- |
SH 3258 8980 |
 |
G4957 | NW face, 9' from W angle of Bryn Siriol |
- |
SH 3238 9124 |
 |
BOLT | OSBM Bolt on living rock, 31' SW of roadway, 26' from hedge, S side of road |
- |
SH 3191 9234 |
 |
G4958 | SE face, S angle of building, Frondou Farm |
- |
SH 3273 9291 |
 |
G4959 | SW angle, W face of barn at Cafnan Farm |
- |
SH 3434 9304 |
 |
G4960 | W face, 8' from NW angle of Pen Lon Farm |
- |
SH 3578 9296 |
 |
S7552 | NW face, 3' from W angle of Cemaes Bay School |
- |
SH 3730 9344 |
 |
G4961 | W face, NW angle of Rhos Isaf |
- |
SH 3905 9359 |
 |
G4962 | NE face, E angle of Tregynrig Bach |
- |
SH 4056 9352 |
 |
BOLT | OSBM Bolt on concrete block at fence junction |
- |
SH 4200 9364 |
 |
BOLT | OSBM Bolt on living rock 17' E of wall, E side of road, 87' S of wall junction |
- |
SH 4294 9378 |
 |
S7551 | E face, SE angle of Junior School |
- |
SH 4407 9311 |
 |
S7550 | SW face, 5' from W angle of Police Station |
- |
SH 4429 9286 |
 |
G4963 | W face, 5' from SW angle of Peniel Chapel, N side of Llaneiloan Road |
- |
SH 4518 9311 |
 |
BOLT | OSBM Bolt on living rock, 115' E of wall junction, S side of road, 4' N of wall |
- |
SH 4628 9267 |
 |
G4964 | S face, 6' from SW angle of Bryn Awelon |
- |
SH 4665 9200 |
 |
S7549 | NW face, N angle of school at Penysarn |
- |
SH 4620 9069 |
 |
G4965 | NW face, 28' from N angle of Gwylbcoed Farm |
- |
SH 4644 8899 |
 |
G4966 | Llaneuddog, Sardis Chapel. |
- |
SH 4670 8803 |
 |
G4967 | Brynrefail. |
- |
SH 4805 8687 |
 |
BOLT | OSBM Bolt on boulder 147' NW of wall junction, 102' S of wall junction, 5' E of wall, S side of road |
- |
SH 4920 8558 |
 |
S7548 | NE face, E angle of Llanallgo School |
- |
SH 5054 8525 |
 |
G4969 | NW face, W angle of Tydden Eden Farm House |
- |
SH 5140 8396 |
 |
S7547 | NE face, 29' from E angle of Benllech Congregational Chapel |
- |
SH 5175 8283 |
 |
G4970 | NE face, Groes Wion, 19' from E angle |
- |
SH 5208 8173 |
 |
G4971 | W face, 4' from SW angle of Springholme |
- |
SH 5211 8043 |
 |
G4972 | NW face, W angle of Bull Hotel |
- |
SH 5215 7923 |
 |
S7546 | NE face, 7' from E angle of Pentraeth Rectory |
- |
SH 5253 7850 |
 |
BOLT | OSBM Bolt on living rock, Afon Braint, SW side of road |
- |
SH 5409 7782 |
 |
G4973 | NE face, 4' from E angle of Bryn Hyfryd House |
- |
SH 5589 7703 |
 |
BOLT | OSBM Bolt in culvert, 15' E from production of hedge alongside Afon Cadnunt, N side of road |
- |
SH 5699 7641 |
 |
G4974 | S face, 25' from SE angle of lodge to Home Farm |
- |
SH 5915 7642 |
 |
S7545 | NW face, 4' from W angle of Beaumaris Grammar School |
- |
SH 6059 7623 |
 |
S7544 | SW angle of Beaumaris Post Office, NE side of Church Street |
- |
SH 6050 7611 |
 |
BOLT | OSBM Bolt on living rock, NW side of road, 555' SW of milestone 'Beaumaris 1M' |
- |
SH 5928 7488 |
 |
BOLT | North Terminal Transfer Bolt - in concrete block 22' NE of path in grounds of Gazelle Hotel |
- |
SH 5799 7403 |
 |
BOLT | Garth Transfer Bolt - in concrete roof of building SW of Garth Pier |
- |
SH 5840 7316 |
 |
G2762 | S face of living rock, N side of road, 131' E from wall junction |
- |
SH 5906 7251 |
 |
S0335 | NE face of stone wall, SW side of road, 27' SE from fence junction |
- |
SH 5915 7238 |
 |
G2763 | SE face, 12' from E angle of Penrhyn Home Farm buildings |
- |
SH 5949 7131 |
 |
G2764 | E face, 17' from NE angle of Lyric Cottage, W side of road |
- |
SH 5980 7088 |
 |
BOLT | OSBM Bolt on S end of parapet of railway bridge, 29' N of hedge junction |
- |
SH 6078 7099 |
 |
G2765 | SE face, 7' from S angle of Tan Y Lon, NW side of road |
- |
SH 6191 7112 |
 |
G2766 | SE face, 7' from E angle of dairy of Wig Farm, NW side of road |
- |
SH 6355 7211 |
 |
G2767 | SE face, 7' from E angle of outbuilding at University College Farm, NW side of road |
- |
SH 6520 7273 |
 |
G2768 | SE face, 2' from S angle of Madfryn Farm building, N side of road |
- |
SH 6645 7347 |
 |
G2769 | Llanfairfechan, Church. |
- |
SH 6814 7470 |
 |
G2770 | SE face, 29' from E angle of Bron-Menai Cottages, NW side of road |
- |
SH 6915 7586 |
 |
G2771 | N face, 1' from NE angle of Goat Inn, S side of road |
- |
SH 7057 7617 |
 |
S0333 | Penmaenmawr. |
- |
SH 7181 7629 |
 |
G2772 | SE face, 3' NE from angle of walls of St Seriol's Church, NW side of road |
- |
SH 7218 7651 |
 |
G2773 | NW face, 9' from angle of outbuilding of farm, SE side of road |
- |
SH 7285 7677 |
 |
G2774 | NW face, 2' from N angle of Fairyglen Hotel, SE side of road |
- |
SH 7440 7659 |
 |
BOLT | OSBM Bolt in rock 6' NE & 36' N from junction of F.R. & Old Conway Road, N side of road |
- |
SH 7496 7707 |
 |
FBM | Conwy. |
618.4259ft |
SH 7552 7746 |
This route is covered by Landranger sheets 114 and 115.
(interactive map)