guest [
OSBM Bolt: Ty Coch 
OSBM Bolt in buttress of stone wall, SE side of road, 117' SW of hedge junction [3GL]; OSBM BOLT BUTT WALL SE SIDE RD 39.0M SW FENCE JUNC.
Location
Grid reference: SH 4807 6635.
Landranger 114: Anglesey.
Landranger 115: Snowdon & Caernarfon.
Structure: Roadside wall.
Waypoint: OS0886.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Caernarvon,
11.78km to the south.
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Caernarvon to Holyhead levelling line. The surveyor's description was OSBM Bolt in buttress of stone wall, SE side of road, 117' SW of hedge junction.
Logged Visits
Logged on 26th January 2007 by Meirion. Condition: Good.
Opposite side of road by Ty Coch,there is a short section of railings. The OSBM bolt is about half way along these railings.
Location
Grid reference: SH 4807 6635.
Landranger 114: Anglesey.
Landranger 115: Snowdon & Caernarfon.
Structure: Roadside wall.
Waypoint: OS0886.
Neighbouring Flush Brackets
| S7597 | Brynsiencyn, School 769.68m to the northeast. |
| G4716 | Meas Merllyn 887.52m to the northwest. |
| G5198 | Penrhos 932.31m to the west. |
| G2755 | Waterloo Port 2.28km to the southeast. |
| G4906 | Llys Newdd 2.39km to the west. |
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Caernarvon to Holyhead levelling line. The surveyor's description was OSBM Bolt in buttress of stone wall, SE side of road, 117' SW of hedge junction.
Logged Visits
Logged on 26th January 2007 by Meirion. Condition: Good.
Opposite side of road by Ty Coch,there is a short section of railings. The OSBM bolt is about half way along these railings.
If you have any corrections or additions to this record, please let us know.