Flush Bracket 999: Alder Bourne Bridge   

Flush Bracket on brickwork of bridge over Alder Bourne [2GL] - FB reported destroyed.

Location
Grid reference: TQ 0363 8470.
Landranger 176: West London, Rickmansworth & Staines.
Structure: Bridge.
Waypoint: FB999.

Neighbouring Flush Brackets

998	Rusholt House 886.45m to the north.
1001	Iver Heath 1.02km to the southwest.
1002	Iver Heath, Village Hall 1.44km to the southwest.
997	Denham 1.83km to the north.
1003	Warren Farm 2.18km to the southwest.

The nearest fundamental bench mark is Windsor Castle, 9.99km to the southwest.

Second Geodetic Levelling, England & Wales (1912-21)
This flush bracket was used during the Second geodetic levelling, England & Wales, and was levelled with a height of 111.8200 feet [34.0827 metres] above mean sea level (Newlyn datum). It was included on the Hemel Hempstead to Windsor Castle levelling line. The surveyor's description was Flush Bracket on brickwork of bridge over Alder Bourne.