NY4939 : Ordnance mark
near to Calthwaite, Cumbria, Great Britain

Ordnance mark
Information supplied by geographer is:-
By the way what you have photographed is what is known as a PA bolt which stands for Published Abstract Bolt. The round thing in the centre of the bar is a piece of phosphor bronze set in the wall and has a horizontal mark cut in the end of the bar which is the mark the level is taken to.
By the way what you have photographed is what is known as a PA bolt which stands for Published Abstract Bolt. The round thing in the centre of the bar is a piece of phosphor bronze set in the wall and has a horizontal mark cut in the end of the bar which is the mark the level is taken to.
year taken
2006
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- Grid Square
- NY4939, 2 images (more nearby)
- Photographer
- John Holmes (find more nearby)
- Image classification
- Supplemental image
- Date Taken
- Tuesday, 4 April, 2006 (more nearby)
- Submitted
- Tuesday, 4 April, 2006
- Category
- Marker (more nearby)
- Subject Location
-
OSGB36:
NY 490 397 [100m precision]
WGS84: 54:44.9791N 2:47.6309W
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