OSBM Bolt   

OSBM Bolt in concrete culvert, 300' NW & 195' SE of junction of hedges, on NE side of road, 7' SE of hedge on NE side of road [3GL]; OSBM BOLT CUL 59.4M SE HEDGE JUNC NE SIDE RD.

Location
Grid reference: SP 9006 2690.
Landranger 165: Aylesbury & Leighton Buzzard, Thame & Berkhamstead.
Structure: Culvert.
Waypoint: OS0228.

Neighbouring Flush Brackets

814	Grand Union Canal Bridge 108 1.13km to the northwest.
815	Grand Union Canal Bridge 111 1.32km to the southeast.
813	Three Locks Bridge 1.60km to the northwest.
G3269	Linslade, Stoke Road 1.74km to the southeast.
G3268	Three Locks PH 1.81km to the northwest.

The nearest fundamental bench mark is Great Linford, 16.24km to the north.

Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Great Linford to Hemel Hempstead levelling line. The surveyor's description was OSBM Bolt in concrete culvert, 300' NW & 195' SE of junction of hedges, on NE side of road, 7' SE of hedge on NE side of road.

Logged Visits
Logged on 16th February 2008 by dal. Condition: Probably destroyed.
A new bypass has been built, and there have been many changes to the roads. The location of the culvert is towards the edge of these changes, but I could see no sign that it has survived.