Cut Mark: Green Farm, Milestone, London 15   

Mark on the 15th milestone from London Bridge and 9th from Seven Oaks ; 1.55 ft. above surface [1GL, London to Brighton, Mark No. 45] CUT MARK MS NE SIDE HIGH ST SEVENOAKS 9 (ODN 73.4233m, AGL 0.3m).

Location
Grid reference: TQ 4559 6386.
Landranger 177: East London, Billericay & Gravesend.
Landranger 188: Maidstone & Royal Tunbridge Wells.
Structure: Milestone.
Waypoint: BM7427.

Neighbouring Bench Marks

BM	Green Street Green, Queen's Head 340.59m to the south.
BM	Green Street Green, School 460.43m to the south.
BOLT	Farnborough, St. Giles the Abbot 1.26km to the west.
BM	Pratt's Bottom, Milestone 8 Seven Oaks 1.37km to the southeast.
BM	Farnborough, Milestone, Seven Oaks 10 1.52km to the west.

The nearest fundamental bench mark is Croydon, 13.59km to the west.

First Primary Levelling, England & Wales (1840-60)
This bench mark was used during the First primary levelling, England & Wales, and was levelled with a height of 241.2980 feet [73.5476 metres] above mean sea level (Liverpool datum). It was included on the London to Brighton levelling line. The surveyor's description was No. 45. Mark on the 15th milestone from London Bridge and 9th from Seven Oaks ; 1.55 ft. above surface (p201).

Logged Visits
Logged on 8th February 2010 by Wolrab. Condition: Good.
West face. Milestone is heavily weathered at base.