Author Topic: Survey Markers  (Read 497 times)

MarkT

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Survey Markers
« on: 20:07:44, 28/04/19 »
Whilst walking along the Norfolk Coast last weekend I noticed this Survey Marker in the ground. Never seen one before and have tried to find out more about them like, how many there are, are they still used etc.





On the OS website I found information about Bench Marks, but don't know if they are the same.  Anyone else see these on their travels?

archaeoroutes

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Re: Survey Markers
« Reply #1 on: 20:28:51, 28/04/19 »
I'd guess they are the equivalent. Bench marks were inscribed on available stones or set into trig points so the exact reference point for the theodolite could be revisited. In areas without convenient stone this would be a replacement.

Nowadays when surveying streets, the surveyors fire little metal studs into the pavements for the same purpose.

Walking routes visiting ancient sites in Britain's uplands: http://www.archaeoroutes.co.uk

barewirewalker

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Re: Survey Markers
« Reply #2 on: 08:13:16, 29/04/19 »
There are some GWR bench marks still in hedges not far from my house. They are larger about 8in diam, 3-4in thick cast iron and forged onto the top of lengths of rail track, driven into the ground. They are in hedgerows about 100yds away from the railway fence. same sort of thing I expect. As a child I grew up and within 1/2 a mile of the railway and explored fields close to the line for several miles and never saw these. Why these ones have stayed in place I have no idea.
BWW
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Innominate Man

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Re: Survey Markers
« Reply #3 on: 00:33:27, 30/04/19 »
I have seen Bench Marks on trig points (quite common & logical). Always makes me wonder who else spots them and how many people recognise what they are  ???
This has me wondering now - I can't recall where I have seen them, but possibly places like Great Gable & Sugarloaf.
Only a hill but all of life to me, up there between the sunset and the sea. 
Geoffrey Winthrop Young

MarkT

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Re: Survey Markers
« Reply #4 on: 18:58:19, 30/04/19 »
Thanks for the replies. I guess not many people see them nowadays. Maybe a lot of them have been covered up or been covered by bushes etc.


I only noticed this one as the sun was directly in my eyes so was looking down a lot.