Triangulation Pillar is a Grade II listed building in the Wiltshire local planning authority area, England. First listed on 10 October 1988. Triangulation pillar.
Triangulation Pillar
- WRENN ID
- sleeping-forge-sedge
- Grade
- II
- Local Planning Authority
- Wiltshire
- Country
- England
- Date first listed
- 10 October 1988
- Type
- Triangulation pillar
- Source
- Historic England listing
Description
BULFORD BEACON HILL SU 14 SE 6/86 Triangulation Pillar
II Triangulation pillar, c1936 within enclosure and over gun end of base of original Principal Triangulation of 1794. Concrete pillar in form of square cone with bronze tripod base on top, and benchmark on side (height 204m). Original triangulation point consists of an iron cannon set vertically 3m in ground, the muzzle filled and holding the north-east corner of the primary survey triangle for western England, later protected by 1.9m concrete kerb in form of chamfered square, and all set in triangular earthwork with ditch of 2m wide. This point is 36,574 ft from the southern point near Old Sarum. (Welfare, H.G., Survey Review XXV 194. October 1979)
Listing NGR: SU1950042749
Detailed Attributes
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