[Talk-GB] OS Benchmarks in OSM?

[Dave F]

Hi

It gets discussed every now & again.

Best start with man_made=survey_point & do some further filtering from 
there. On the discussion page of benchmarks there appears to be some 
disagreement in how to tag individual items (quelle surprise).

https://overpass-turbo.eu/s/1qgZ

Cheers
DaveF

On 17/01/2023 22:21, Chris Andrew wrote:
> Hi, everybody!
>
> I've been reading about Ordnance Survey 'Benchmarks'/ Bench Marks. OS 
> suggest that around 190 Fundamental Bench Marks (FBMs) exist, and 
> ""approximately 500 000 'lower order' BMs":
> https://www.ordnancesurvey.co.uk/benchmarks/
>
> A downloadable archive exists, of the Benchmarks, and this is covered 
> by the Open Government Licence (OGL); this appears to be compatible 
> with OSM's approach:
>
> https://wiki.openstreetmap.org/wiki/Open_Government_Licence
>
> Does anyone know whether Benchmarks have been discussed, before? I'm 
> wondering whether this is useful historic information, that could be 
> verified by a StreetComplete quest.
>
> It looks like a (proposed?) tag already exists, but I think this needs 
> expanding slightly, to distinguish between Fundamental Bench Marks 
> (FBMs) and other Bench Marks.
>
> https://wiki.openstreetmap.org/wiki/Tag:type%3Dbenchmark
>
> A quick check of the tag page would suggest that we haven't quite 
> mapped all of the BMs.
>
> Before this goes any further, I just wanted to sound out the list, to 
> see whether we've already been around this buoy.
>
> Many thanks,
>
> Chris Andrew
> chris_debian
>
>
>
>
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>
>
>
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