survey marker
Let an agent explain what survey markers are and how they are used, identify kinds and their registers, relay legal protection and reporting information, and distinguish survey markers from boundary stones and navigation aids.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Identify What marker this is.
Kind
Kind and function.
Kind
Kind.
- What kind of survey marker is it, and what does it reference? definition
- Is the object a survey marker, a boundary stone or another marker? boundary
Register
Registers and data.
Register
Register.
- Where are marker positions recorded, and how are they retrieved? provenance
- Which entry fits the specific survey authority? action
Use Use in surveying.
Surveying
Surveying.
Surveying
Surveying.
- How are markers used to control surveys, mapping and construction? provenance
- Which entry fits geodetic control? action
Modern
GNSS and modern networks.
Modern
Modern.
- How have GNSS and continuously operating stations changed the role of physical markers? provenance
- Which references are standard? provenance
Protect Protection and reporting.
Law
Legal protection.
Law
Law.
- What laws protect markers, and how are damaged markers reported? provenance
- Is the question about a specific marker, which needs the survey authority? boundary
Datum
Datums.
Datum
Datum.
- How do datum changes affect marker coordinates? provenance
- Which entry fits geodetic datum? action
Context History and heritage.
History
History.
History
History.
- How did national surveys establish marker networks, such as triangulation of Britain and India? provenance
- Which entry fits the history of geodesy? action
Heritage
Heritage and hobby.
Heritage
Heritage.
- How are historic markers preserved, and how do enthusiasts record them? provenance
- Which sources are cited? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.BLT
- Other names and narrower kinds
- geodetic station, ground control point, geodetic ground net point
What it is Filled
A durable physical mark set in the ground or on a structure whose position has been precisely measured, used as a reference point for surveying, mapping, boundary definition and geodesy, such as benchmarks giving elevation, triangulation stations, geodetic network points and ground control points for aerial and satellite imagery; markers are typically brass or aluminium discs, pillars or bolts, recorded in official registers with coordinates.
Why it exists Filled
Let an agent explain what survey markers are and how they are used, identify kinds and their registers, relay legal protection and reporting information, and distinguish survey markers from boundary stones and navigation aids.
Distinguishing features Filled
- Measured position
- Official register
- Legal protection
- Network membership
What robots and AI may and may not do Filled
Must not
- Move, remove or damage a survey marker.
- Use old coordinates without stating the datum.
- Treat a survey marker as a boundary marker or the reverse without evidence.
- Rely on a disturbed marker for boundary or engineering work.
Only with a human decision
- Resetting or replacing a marker.
- Using markers to settle a boundary dispute.
May
- Record a survey marker's position, datum and condition in the survey record.
- Report disturbed, damaged or missing markers to the mapping authority.
- Convert marker coordinates between datums, stating the transformation.
Moral aspects Filled
- Markers underpin property boundaries and engineering; damage causes costly errors.
- Boundary errors can lead to disputes between neighbours.
Who is affected
- Landowners
- Surveyors
- Engineers
Owners Filled
Steward
The national mapping or survey authority that set it; the landowner hosts it.
Master systems
- National geodetic control registers
Links to other meta-models Filled
parent
- Q13580385 - registry parent class
related
- geographical marker - in registry terms
- geodesy - and surveying
- geodetic register - with coordinates
- boundary marker - which marks property limits
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.survey-marker
- Wikidata: Q352956 (https://www.wikidata.org/wiki/Q352956)
- station designation: per survey authority stamped on the marker
Direct properties required Filled
- Maximum horizontal dimension: millimetre - Measure the widest horizontal extent of the marker and distinguish the visible mark from its supporting monument.
- Exposed height: millimetre - Measure the vertical projection above the surrounding ground or mounting surface.
- Embedment depth: metre - Establish the depth below the mounting surface from installation records or an authorized assessment that preserves the marker.
Recognition required Filled
- Precisely measured reference point
- Discs, pillars, bolts and stations
- Boundary stones mark property limits; milestones mark distance; navigation aids guide travel
- A metal disc, bolt or pillar set in rock, concrete or a building, stamped with an identifier and often a warning against disturbance.
Capabilities and actions required Filled
- explain kinds and functions
- relay registers and coordinates sources
- relay legal protection
- distinguish from related markers
Hazards and failure modes required Filled
- Disturbance or destruction
- Datum changes making old coordinates inconsistent
- Confusion with other markers
Standards and interfaces required Filled
- National geodetic survey standards
- Laws protecting survey markers from disturbance
- Datum and coordinate reference system definitions
Context of use required Filled
- Providing precise reference positions for surveying and mapping.
- benchmarks for elevation
- triangulation pillars and stations
- geodetic network points
- ground control points for imagery
- continuously operating GNSS stations as modern counterparts
- historical markers of national surveys
Sources Filled
- Wikidata item Q352956: survey marker - identity and sense of the item
- Wikipedia: Survey marker - general description of the item
Open questions
- Should benchmark and triangulation station be separate entries?
- How should national registers be linked?
- How should datum history be recorded?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q352956/spec.json