Pivot benchmark in Ogden Clough © John Illingworth cc-by-sa/2.0

2015

SE0531 : Pivot benchmark in Ogden Clough

taken 9 years ago, near to Ogden, Calderdale, England

Pivot benchmark in Ogden Clough

Fairly rare, these are used on horizontal surfaces such as soft sandstone, where the insertion of a rivet would break away the stone. They consist of a small hole or depression cut to take a pivot, a steel ball bearing of 5/8" diameter (16mm). In use, the pivot is placed in the depression and the levelling staff held on top of the pivot.

Geographical Context: Uplands Paths Moorland Primary Subject: Benchmark

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Grid Square: SE0531, 50 images (more nearby 🔍)
Photographer: John Illingworth (more nearby)
Date Taken: Friday, 23 October, 2015 (more nearby)
Submitted: Saturday, 24 October, 2015
Subject Location: OSGB36: SE 0525 3195 [10m precision]
WGS84: 53:47.0310N 1:55.3082W
Camera Location: OSGB36: SE 0525 3195
View Direction: Northeast (about 45 degrees)

NW	N	NE
W	Go	E
SW	S	SE

Image classification(about): Supplemental image

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SE0531 : Pivot benchmark in Ogden Clough

taken 9 years ago, near to Ogden, Calderdale, England