{ "model": { "rank": 4352, "code": "thing-q394", "model_id": "vr.tr.metrology", "name": "metrology", "purpose": "Let an agent explain metrology and its branches, relay the SI, traceability and uncertainty concepts from BIPM and standards sources, describe applied and legal metrology, and distinguish metrology from meteorology and from measurement scales in statistics.", "family": "Thing Registry", "category": "Information and virtual systems", "status": "research-draft", "kind": "thing", "plane": "INF", "domain": "INF.KNW", "industry": "", "version": "", "url": "/models/thing/q394/", "tier": 2, "score": 76, "payload": { "layer": "wikidata", "aliases": [ "air quality monitoring equipment", "level of measurement", "forensic metrology", "Torino Scale Level", "ordinal scale", "performance status", "Karnofsky scoring", "threat level", "interval scale", "ECOG scale", "level of INES scale", "laser metrology", "engineering metrology", "exact time", "nanometrology", "historical metrology", "dimensional metrology", "quantum metrology" ], "aliasCount": 18, "merged": 18, "knownIn": 76, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.metrology", "source": { "dataset": "wikidata", "item": "Q394", "url": "https://www.wikidata.org/wiki/Q394", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-13T03:12:16Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 3, "engine": "claude" }, "metaModel": { "id": "THING-Q394", "registryId": "vr.tr.metrology", "name": "metrology", "version": "0.2.0-wave.3", "entryKind": "thing", "family": "Thing Registry", "domain": [ "INF.KNW" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q394/", "model": { "registry_id": "vr.tr.metrology", "name": "metrology", "purpose": "Let an agent explain metrology and its branches, relay the SI, traceability and uncertainty concepts from BIPM and standards sources, describe applied and legal metrology, and distinguish metrology from meteorology and from measurement scales in statistics.", "definition": "The science of measurement and its application, covering the definition of units and realisation of standards, the calibration and traceability of instruments, the evaluation of measurement uncertainty, and applied fields such as legal metrology for trade, industrial metrology, forensic metrology, environmental monitoring with instruments such as air quality monitoring equipment, and the theory of measurement scales including nominal, ordinal, interval and ratio levels used in the social sciences and in rating scales such as performance status or the Torino scale.", "what_it_is_for": "Ensuring reliable and comparable measurement.", "affordances": [ "explain the science and branches", "relay SI, traceability and uncertainty", "describe applied fields", "distinguish related concepts" ], "distinguishing_features": [ "Units and standards", "Traceability chains", "Uncertainty evaluation", "Legal and applied branches" ], "appearance": "Not a visible object; standards, laboratories and instruments.", "visual_identification": [ "Science of measurement", "Scientific, industrial, legal and forensic metrology; measurement scales and levels", "Meteorology studies weather; statistics analyses measured data; instrumentation builds instruments" ], "physical_properties": [ { "quantity": "SI base units", "typical_range": "7", "unit": "count", "note": "" }, { "quantity": "SI redefinition", "typical_range": "2019", "unit": "year", "note": "constants-based" }, { "quantity": "Metre Convention", "typical_range": "1875", "unit": "year", "note": "" } ], "families_and_kinds": [ "scientific metrology and the SI", "industrial metrology and calibration", "legal metrology for trade and safety", "forensic metrology", "environmental and health measurement including air quality monitoring", "measurement theory and levels of measurement such as nominal, ordinal, interval and ratio scales", "rating scales such as performance status and the Torino scale as ordinal measures" ], "related_models": [ { "relation": "is a kind of", "target": "physical science", "why": "in registry terms" }, { "relation": "is governed by", "target": "International Bureau of Weights and Measures", "why": "under the Metre Convention" }, { "relation": "defines", "target": "International System of Units", "why": "the SI" }, { "relation": "is applied in", "target": "calibration", "why": "and testing" } ], "identifiers": [], "standards_and_regulation": [ "Metre Convention and BIPM", "SI Brochure", "ISO/IEC 17025 for laboratories", "OIML recommendations and national legal metrology laws", "GUM and VIM guides on uncertainty and vocabulary" ], "failure_modes_and_hazards": [ "Broken traceability and uncalibrated instruments", "Confusing metrology with meteorology", "Treating ordinal scales as interval data" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What metrology is.", "rationale": "Definition.", "layers": [ { "id": "definition", "name": "Definition", "description": "Definition and branches.", "findings": [ { "id": "definition-finding", "name": "Definition", "description": "Definition.", "questions": [ { "text": "What is metrology, and what are its scientific, industrial and legal branches?", "kind": "definition" }, { "text": "Is the question about metrology, meteorology, statistics or a specific rating scale?", "kind": "boundary" } ] } ] }, { "id": "concepts", "name": "Concepts", "description": "Core concepts.", "findings": [ { "id": "concepts-finding", "name": "Concepts", "description": "Concepts.", "questions": [ { "text": "What are units, standards, traceability, calibration and measurement uncertainty?", "kind": "definition" }, { "text": "Which entry fits the specific concept?", "kind": "action" } ] } ] } ] }, { "id": "system", "name": "System", "description": "The SI and institutions.", "rationale": "Standards.", "layers": [ { "id": "si", "name": "SI", "description": "The SI.", "findings": [ { "id": "si-finding", "name": "SI", "description": "SI.", "questions": [ { "text": "How is the SI defined since 2019, and how are units realised?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] }, { "id": "institutions", "name": "Institutions", "description": "Institutions.", "findings": [ { "id": "institutions-finding", "name": "Institutions", "description": "Institutions.", "questions": [ { "text": "What do BIPM, national metrology institutes and OIML do?", "kind": "provenance" }, { "text": "Which entry fits the specific institution?", "kind": "action" } ] } ] } ] }, { "id": "apply", "name": "Apply", "description": "Applied metrology.", "rationale": "Practice.", "layers": [ { "id": "legal", "name": "Legal", "description": "Legal and forensic metrology.", "findings": [ { "id": "legal-finding", "name": "Legal", "description": "Legal.", "questions": [ { "text": "How does legal metrology govern trade instruments, and what is forensic metrology?", "kind": "provenance" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] }, { "id": "monitoring", "name": "Monitoring", "description": "Monitoring instruments.", "findings": [ { "id": "monitoring-finding", "name": "Monitoring", "description": "Monitoring.", "questions": [ { "text": "How are instruments such as air quality monitors calibrated and their data made traceable?", "kind": "provenance" }, { "text": "Which entry fits air quality monitoring?", "kind": "action" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "Scales and history.", "rationale": "Context.", "layers": [ { "id": "scales", "name": "Scales", "description": "Levels of measurement.", "findings": [ { "id": "scales-finding", "name": "Scales", "description": "Scales.", "questions": [ { "text": "What are nominal, ordinal, interval and ratio scales, and how do rating scales such as performance status fit?", "kind": "provenance" }, { "text": "Which entry fits level of measurement?", "kind": "action" } ] } ] }, { "id": "history", "name": "History", "description": "History.", "findings": [ { "id": "history-finding", "name": "History", "description": "History.", "questions": [ { "text": "How did measurement standards develop from ancient units to the Metre Convention and the constants-based SI?", "kind": "provenance" }, { "text": "Which entry fits the history of measurement?", "kind": "action" } ] } ] } ] } ] }, "openQuestions": [ "Should legal metrology and level of measurement be separate primary entries?", "How should BIPM and ISO sources be linked?", "The registry entry has merged aliases naming instruments and rating scales; should they be split off?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "discipline or field of knowledge", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a metrology, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain metrology and its branches, relay the SI, traceability and uncertainty concepts from BIPM and standards sources, describe applied and legal metrology, and distinguish metrology from meteorology and from measurement scales in statistics.", "characteristics": { "substance": "information", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "read and interpreted" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: air quality monitoring equipment, level of measurement, forensic metrology, Torino Scale Level, ordinal scale, performance status, Karnofsky scoring, threat level, interval scale, ECOG scale, level of INES scale, laser metrology.", "18 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 76 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a metrology, and on what evidence are they told apart?" ], "whatItIsMadeOf": "content that has to be carried by something else", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "read it and act on what it says" ], "howItIsRecognised": [], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "air quality monitoring equipment", "level of measurement", "forensic metrology", "Torino Scale Level", "ordinal scale", "performance status", "Karnofsky scoring", "threat level", "interval scale", "ECOG scale", "level of INES scale", "laser metrology" ] } ], "standing": "Described in 76 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 18 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one metrology from another, and a metrology from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a metrology, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a metrology, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a metrology is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a metrology, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a metrology, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a metrology is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a metrology sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a metrology, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a metrology, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a metrology is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a metrology from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a metrology, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a metrology, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a metrology is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a metrology passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a metrology between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a metrology, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a metrology, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a metrology is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a metrology, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a metrology is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a metrology, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a metrology, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a metrology is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "content-and-access", "name": "Content, encoding and access", "description": "What a metrology says, how it is encoded and who may read it.", "rationale": "An informational thing carries content that can be copied, versioned and withheld, none of which its physical carrier explains.", "layers": [ { "id": "content-and-encoding", "name": "Content and encoding", "description": "The content itself, its format and its language.", "findings": [ { "id": "content-and-format", "name": "Content, format and language", "description": "What a metrology contains and in what form it is held.", "questions": [ { "id": "content-and-format-q01", "text": "What identifies and describes the content of a metrology, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "content-and-format-q02", "text": "Who or what asserted this about the content of a metrology, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "content-and-format-q03", "text": "What may an agent decide or do once the content of a metrology is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "access-and-rights", "name": "Access, rights and retention", "description": "Who may read, copy or change it, and for how long it is kept.", "findings": [ { "id": "access-rules", "name": "Access rules and retention", "description": "The permissions attached to a metrology and the period it survives.", "questions": [ { "id": "access-rules-q01", "text": "What identifies and describes access to a metrology, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "access-rules-q02", "text": "Who or what asserted this about access to a metrology, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "access-rules-q03", "text": "What may an agent decide or do once access to a metrology is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "subject-and-method", "name": "Subject matter and method", "description": "What metrology studies and how it establishes anything.", "rationale": "A field is identified by its questions and its methods, and those are what distinguish it from the fields next to it.", "layers": [ { "id": "subject", "name": "Subject matter", "description": "The questions it takes as its own.", "findings": [ { "id": "subject-record", "name": "Questions and objects of study", "description": "What it is about, stated so a neighbouring field can be told apart.", "questions": [ { "id": "subject-record-q01", "text": "What questions and objects does metrology take as its own?", "kind": "definition" }, { "id": "subject-record-q02", "text": "Which questions does it share with a neighbouring field, and who claims them?", "kind": "boundary" } ] } ] }, { "id": "method", "name": "Method and evidence", "description": "How claims are established and what counts as evidence.", "findings": [ { "id": "method-record", "name": "Methods and standards of evidence", "description": "The methods used and what they are taken to establish.", "questions": [ { "id": "method-record-q01", "text": "By what methods does metrology establish claims, and what counts as sufficient evidence?", "kind": "provenance" }, { "id": "method-record-q02", "text": "What kind of claim can this field not settle, and where should an agent look instead?", "kind": "action" } ] } ] } ] }, { "id": "institutions-and-classification", "name": "Institutions and classification", "description": "Where metrology is practised and how catalogues place it.", "rationale": "The institutional footprint is the evidence that a field exists as a field rather than as a topic.", "layers": [ { "id": "institutions", "name": "Institutional markers", "description": "Societies, journals, degrees and departments.", "findings": [ { "id": "institution-record", "name": "Bodies and venues", "description": "Where the field organises itself.", "questions": [ { "id": "institution-record-q01", "text": "Which societies, journals or degrees mark metrology as an established field?", "kind": "provenance" }, { "id": "institution-record-q02", "text": "What would show that it is emerging or dissolving rather than established?", "kind": "boundary" } ] } ] }, { "id": "classification", "name": "Classification schemes", "description": "Where library and research classifications put it.", "findings": [ { "id": "classification-record", "name": "Codes and their disagreements", "description": "The classification codes that place it, and where they differ.", "questions": [ { "id": "classification-record-q01", "text": "Which classification schemes place metrology, under what codes?", "kind": "definition" }, { "id": "classification-record-q02", "text": "Where do those schemes disagree about its scope?", "kind": "boundary" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a metrology came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a metrology and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a metrology, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a metrology, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a metrology is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a metrology is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a metrology, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a metrology, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a metrology is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 6, "layers": 12, "findings": 14, "questions": 38 } } } }