[Tagging] Feature Proposal - RFC - Survey Markers

[David Marchal]

I just added the "medallion" value to your proposal, according to data I gathered from the french institute for geography, the official body maintaining such survey points. Feel free to ask details if my correction lacks them.

Regards.

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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
Am Samstag 5 Juni 2021 14:27 schrieb Paul Allen <pla16021 at gmail.com>:

> On Sat, 5 Jun 2021 at 07:42, David Marchal via Tagging <tagging at openstreetmap.org> wrote:
>
>> How would the proposal accomodate such survey markers: https://commons.wikimedia.org/wiki/File:Rep%C3%A8re_g%C3%A9og%C3%A9sique_ENSG_Champs_Marne_3.jpg?uselang=fr
>
> Find out how it's used (something gets inserted?) and/or the French name for
> it. Try to figure out a suitable English term. Document it. (I omitted the
> part about "have a long argument on the mailing list" because that is
> a given and occurs at all stages of the process).
>
>> These are common in France; the closer guess would be to say it is a plaque, but I'm a bit uncomfortable with it; I feel that a plaque implies a somewhat rectangular piece of metal with inscriptions on it.
>
> I'm uncomfortable with that for two reasons.
>
> 1) It doesn't fit my mental image of a plaque. Not even close.
>
> 2) What the proposal calls a plaque is called by Ordnance Survey a
> bracket. It isn't just a visual marker, It has slots to which a small metal
> platform is attached to the two slots at the top. Well, that's true of
> flush brackets, there are also a few rare projecting brackets. In some
> countries there may be survey points which are actual plaques (a
> more expensive equivalent of a cut mark) but the examples in
> the proposal are brackets, not plaques.
>
>> An intuitive name in French would be "cartouche", which is not a plaque stricto sensu.
>
> That word is also used in English, but the English meanings don't seem
> applicable here. It would be very confusing to call it that.
>
>> Or it could be explicitly said in the proposal that the plaque may have any shape, as long as it is an object which is embedded on the surface of another one, such as a building.
>
> Using "plaque" in that way would also apply to rivets and bolts, which are very
> different types of survey mark. The point is to distinguish between the different
> types, not merge them all into "plaque" (if we do that then there is no point
> in having a type in the first place).
>
> The types used in the UK are listed here: http://www.rayhutchings.co.uk/?page_id=961
> That doesn't have anything directly equivalent to your example. However, your
> example looks to me like it might be a metal-reinforced version of a pivot (that
> is pure guesswork on my part) or the equivalent of a bolt but an "innie"
> rather than an "outie."
>
> --
> Paul
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