OSBM Bolt: by St. Mary's (Orkney) 

OSBM Bolt, culvert, W side of road, centre of stream.
Location
Grid reference: HY 4707 0196.
Landranger 6: Orkney - Mainland.
Landranger 7: Orkney - Southern Isles.
Structure: Bridge.
Waypoint: OS2079.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Duncansby Head,
32.04km to the south.
Logged Visits
Logged on 5th May 2007 by iainmac. Grid reference: HY 4707 0194. Condition: Good.
Location
Grid reference: HY 4707 0196.
Landranger 6: Orkney - Mainland.
Landranger 7: Orkney - Southern Isles.
Structure: Bridge.
Waypoint: OS2079.
Neighbouring Flush Brackets
| 12112 | Kirkwall (Orkney) 7.81km to the north. |
| 12151 | Hobbister (Orkney) 9.72km to the northwest. |
Logged Visits
Logged on 5th May 2007 by iainmac. Grid reference: HY 4707 0194. Condition: Good.
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