SD4764 : Rivet on Milestone

taken 12 years ago, near to Slyne, Lancashire, Great Britain

Rivet on Milestone
Rivet on Milestone
Bench mark on top of the milestone. For a wider view of the milestone see SD4764 : Milestone near Slyne and SD4764 : Milestone near Slyne LinkExternal link
A bench mark is an Ordnance Survey arrowhead sign found on walls, bridges, churches and specially erected triangulation pillars where the altitude above sea-level has been accurately measured by surveyors. The arrowhead points to a horizontal line above it which marks the exact altitude.
With rivets and pivots there is no datum (horizontal line) cut, the pointed-to horizontal surface defining the datum height.
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SD4764, 133 images   (more nearby search)
Photographer
  (find more nearby)
Date Taken
Monday, 22 March, 2010   (more nearby)
Submitted
Friday, 9 April, 2010
Category
Bench Mark   (more nearby)
Subject Location
OSGB36: geotagged! SD 4764 6448 [10m precision]
WGS84: 54:4.4144N 2:48.1004W
Camera Location
OSGB36: geotagged! SD 4764 6448
View Direction
WEST (about 270 degrees)
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