Triangulation Pillar S4459: High Street Green   

Location
Grid reference: TL 07238 08316.
Landranger 166: Luton & Hertford, Hitchin & St Albans.
Waypoint: TP3809.

Neighbouring Triangulation Pillars

10709	Varneys Wood 2.63km to the northwest.
S4456	Wood Farm 2.64km to the northwest.
S4455	Fieldsend 4.42km to the west.
S4460	Barnes Farm 4.92km to the south.
S4510	Potterscrouch 5.58km to the southeast.

The nearest fundamental bench mark is Hemel Hempstead, 1.30km to the northwest.

Third Geodetic Levelling, England & Wales (1950-68)
This triangulation pillar was used during the Third geodetic levelling, England & Wales. It was included on the Hemel Hempstead to Wallingford levelling line. The surveyor's description was W face of High Street Farm Trig Pillar.