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Newlyn Tidal Observatory   

BOLT: OSBM BOLT FLOOR NEWLYN TIDAL OBSY (NEWLYN TGBM) (ODN 4.7512m, AGL 0.0m).

Location
Grid reference: SW 4676 2855.
Landranger 203: Land's End & Isles of Scilly, St Ives & Lizard Point.
Explorer 102: Land's End.
Waypoint: TIDE01.

Neighbouring Flush Brackets
1565 Newlyn, South Pier, Tide Gauge Aux 1 50.00m to the southwest.
1520 Newlyn, South Pier, Tide Gauge Aux 2 220.23m to the southwest.
1574 Newlyn, Trinity Methodist Chapel 644.05m to the northwest.
1575 Newlyn, School 735.46m to the west.
1816 Penzance, New Road 888.43m to the north.
The nearest fundamental bench mark is Tolcarne, 883.91m to the northwest.

Second Geodetic Levelling, England & Wales (1912-21)
This bench mark was used during the Second geodetic levelling, England & Wales, and was levelled with a height of 15.5880 feet [4.7512 metres] above mean sea level (Newlyn datum). It was included on the Newlyn (Tolcarne) to Observatory levelling line. The surveyor's description was Observatory B.M.

Logged Visits
Visited on 6th April 2016 by FRI. Condition: Good.
revisited with a members of the Penwith Local History Group. Again visit by special arrangement, BM found to be in excellent condition. I arranged the visit as part of a presentation and a guided walk of some of the BMs in Newlyn.

Visited on 16th December 2013 by FRI. Condition: Good.
Not sure if this is a different bolt to the "Tide Gauge" as they are not numbered?
With special permission I was given a guided tour of the Tidal Station, inspected the Bolt, kept under an inspection cover as well as a piece of loose floor section and found it to be in excellent condition, during visit was able to see the tide gauge recording device, the well head and the manual recording tape (used daily to confirm recordings) and the electronic link to the University logging the data.
I was really excited to be able to gain access and thank the staff on site for their cooperation as well as my daughter Katy for organising the trip.

Visited on 15th September 2013 by pkbathrooms. Grid reference: SW 4676 2855. Condition: Good.
gates were not locked so walked through to bag this
If you have any corrections or additions to this record, please let us know.
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