OS National Grid
E486591
OS National Grid is the national coordinate reference system used in Great Britain for accurately mapping and locating geographic features.
All labels observed (1)
| Label | Occurrences |
|---|---|
| OS National Grid canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T5014791 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: OS National Grid Context triple: [British National Grid, alsoKnownAs, OS National Grid]
-
A.
National Grid
National Grid is a major British multinational electricity and gas utility company responsible for operating and maintaining the high-voltage power transmission network in Great Britain.
-
B.
Northern Powergrid
Northern Powergrid is a UK-based electricity distribution network operator responsible for delivering power to homes and businesses across the North East, Yorkshire, and northern Lincolnshire.
-
C.
Indian national grid
The Indian national grid is the countrywide interconnected power transmission network that enables electricity generated across India to be distributed reliably and efficiently to consumers in all regions.
-
D.
Ontario electricity grid
The Ontario electricity grid is the province-wide interconnected network of power generation, transmission, and distribution infrastructure that delivers electricity to homes, businesses, and industries across Ontario, Canada.
-
E.
Central Authority for electricity
The Central Authority for Electricity was a UK governmental body responsible for overseeing and coordinating the generation and supply of electricity at a national level.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: OS National Grid Target entity description: OS National Grid is the national coordinate reference system used in Great Britain for accurately mapping and locating geographic features.
-
A.
National Grid
National Grid is a major British multinational electricity and gas utility company responsible for operating and maintaining the high-voltage power transmission network in Great Britain.
-
B.
Northern Powergrid
Northern Powergrid is a UK-based electricity distribution network operator responsible for delivering power to homes and businesses across the North East, Yorkshire, and northern Lincolnshire.
-
C.
Indian national grid
The Indian national grid is the countrywide interconnected power transmission network that enables electricity generated across India to be distributed reliably and efficiently to consumers in all regions.
-
D.
Ontario electricity grid
The Ontario electricity grid is the province-wide interconnected network of power generation, transmission, and distribution infrastructure that delivers electricity to homes, businesses, and industries across Ontario, Canada.
-
E.
Central Authority for electricity
The Central Authority for Electricity was a UK governmental body responsible for overseeing and coordinating the generation and supply of electricity at a national level.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
coordinate reference system
ⓘ
national grid reference system ⓘ |
| alsoKnownAs |
British National Grid
ⓘ
OSGB36 National Grid ⓘ
linked to:
Ordnance Survey National Grid
|
| axisOrientation | eastings-northings ⓘ |
| coordinateFormat |
alphanumeric grid reference
ⓘ
eastings and northings ⓘ |
| coordinateUnits | metres ⓘ |
| country | Great Britain ⓘ |
| covers |
Great Britain mainland
ⓘ
Isle of Wight ⓘ Scottish islands ⓘ |
| datum | OSGB36 ⓘ |
| ellipsoid |
Airy 1830
ⓘ
linked to:
Airy 1830 ellipsoid
|
| excludes |
Channel Islands
ⓘ
linked to:
Channel Islands (crown dependencies)
Isle of Man ⓘ
linked to:
Isle of Man (crown dependency)
Northern Ireland ⓘ |
| gridSquareLabeling | two-letter prefixes ⓘ |
| hasEPSGCode | 27700 ⓘ |
| hasTransformationTo | WGS84 ⓘ |
| maintainedBy | Ordnance Survey ⓘ |
| mapProjection | Transverse Mercator ⓘ |
| projectionType | conformal projection ⓘ |
| purpose |
geospatial referencing
ⓘ
land surveying ⓘ navigation ⓘ topographic mapping ⓘ |
| referenceMeridian |
Greenwich meridian
ⓘ
linked to:
Prime Meridian
|
| region | United Kingdom ⓘ |
| replaced | Cassini grid ⓘ |
| spatialReferenceType | projected coordinate system ⓘ |
| timeOfIntroduction | mid 20th century ⓘ |
| typicalPrecisionLevels |
1 km grid reference
ⓘ
1 m grid reference ⓘ 10 m grid reference ⓘ 100 m grid reference ⓘ |
| usedBy |
UK government agencies
ⓘ
linked to:
UK executive agencies
local authorities in Great Britain ⓘ mapping and GIS professionals in Great Britain ⓘ |
| usedFor |
Ordnance Survey digital mapping products
ⓘ
Ordnance Survey paper maps ⓘ emergency services location referencing in Great Britain ⓘ environmental monitoring in Great Britain ⓘ infrastructure planning in Great Britain ⓘ |
| usedIn |
England
ⓘ
Scotland ⓘ Wales ⓘ |
| zoneSystem | 100 km grid squares ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: OS National Grid Description of subject: OS National Grid is the national coordinate reference system used in Great Britain for accurately mapping and locating geographic features.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.