gauge
Enable an AI agent to recognise a physical gauge, assess whether its indication or limit check is trustworthy, and determine whether it is suitable for an intended measurement.
Bundle → Layer → Finding → Questions Filled
5 bundles · 9 layers · 15 findings · 23 questions
Measurement identity Establishes what the gauge checks and what its result means.
Quantity and feature
Identifies the intended measurand or geometric feature.
Measurement target
Record the quantity or feature explicitly rather than inferring it from the device name or appearance.
- Which quantity or geometric feature is this gauge intended to measure or check? definition
- Which similar features or quantities cannot be checked with this gauge? boundary
Result and reference
Separates numerical indication, comparison and limit checking.
Result semantics
Record whether the result is a value, deviation or acceptance outcome and identify its reference basis.
- Does the gauge return a numerical value, a deviation from a master, or a fit or limit outcome? definition
- What datum, pressure reference, nominal value or master makes that result interpretable? measurement
Sensing and coupling Describes how the gauge acquires a result from the measured medium or feature.
Operating chain
Connects the sensing or checking element to the observable result.
Indication mechanism
Identify the physical checking principle and any conversion, power or configuration needed to obtain a result.
- What physical response or fixed geometry produces the indication or checking outcome? definition
- What power, excitation, mode selection or setup is required before the result is valid? action
Measurement coupling
Captures the connection and positioning conditions at the measurement boundary.
Interface compatibility
Record the connection or contact requirements that determine whether the gauge can interrogate the intended feature correctly.
- Which connection dimensions, contact geometry or material compatibility requirements must the application satisfy? boundary
- What alignment, insertion depth, contact force or mounting orientation does the specified procedure require? action
Metrological fitness Establishes whether the gauge can support the intended measurement or acceptance decision.
Range and decision
Relates usable range or checking limits to the application requirement.
Usable discrimination
Keep operating bounds, resolution, error limits and acceptance boundaries distinct.
- What usable interval or discrete checking limits apply, and in which units? measurement
- What performance evidence and decision rule are required to judge the intended tolerance, including results near a limit? measurement
Reference evidence
Links claims about gauge performance to applicable calibration or verification evidence.
Calibration applicability
Assess what was actually calibrated or verified, under which conditions, and whether that evidence covers the proposed use.
- Which record identifies the reference standards, tested points or dimensions, method and resulting uncertainty or conformance assessment? provenance
- Does that evidence cover the intended range, configuration and conditions, and what events require renewed verification? boundary
Condition and use Connects gauge condition and application stresses to valid and permitted operation.
Result integrity
Identifies defects and influences that can undermine a reading or fit test.
Degradation checks
Select condition checks appropriate to the gauge form, such as zero return, repeatability, contact wear or damaged checking surfaces.
- Which observations or reference checks can reveal sticking, zero shift, inconsistent response, wear or damaged contact surfaces? measurement
- Which observed defects require cleaning, adjustment, renewed verification or removal from service? action
Operating and service limits
Defines application-specific limits and preparations for use or servicing.
Permitted handling
Record supported limits for the applicable gauge form and the procedures needed to connect, check, disconnect and preserve it.
- What documented limits apply to temperature, pressure, overload, vibration, medium exposure or insertion force? boundary
- What isolation, pressure relief, cleaning, battery servicing or protective storage steps are required where applicable? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these check these first hold for the sense of gauge this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these kinds and varieties hold for the sense of gauge this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these standards and regulation hold for the sense of gauge this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these real-world use hold for the sense of gauge this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these failure modes and hazards hold for the sense of gauge this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these regional variation hold for the sense of gauge this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of gauge this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.OBJ
- Other names and narrower kinds
- chain gauge, battery indicator, composing stick, angle gauge, center gauge, bore gauge
What it is Filled
A gauge is a physical instrument or checking tool used to indicate a quantity or determine whether a dimension or condition meets a specified limit.
In scope
- Quantity or dimensional feature measured or checked
- Indicating, comparative and fixed limit gauge forms
- Sensing or contact principle and connection to the measured object or medium
- Range, reference basis, resolution and acceptance limits
- Calibration, verification, wear and measurement readiness
Out of scope
- Gauge as a numerical designation for wire, sheet thickness or similar sizing systems
- Track gauge as a railway dimension
- Gauge theories and mathematical gauge transformations
- The process, vessel or workpiece being measured
- Product lines, individual asset histories and calibration service organisations
Why it exists Filled
Enable an AI agent to recognise a physical gauge, assess whether its indication or limit check is trustworthy, and determine whether it is suitable for an intended measurement.
Distinguishing features Filled
- It is a physical device used to indicate a quantity, compare a feature with a reference, or test whether a feature meets a limit.
- A fixed limit gauge can yield a fit or pass/fail result without displaying a numerical measurement.
- An indicating gauge needs an identifiable relationship between its indication and the measured quantity; markings alone do not establish that relationship.
- A gauge used only for indication or checking does not itself regulate the measured process; integrated control functions require a separate boundary.
- The word denotes a device here, rather than the dimension, sizing convention or mathematical concept also called gauge.
What robots and AI may and may not do Filled
Must not
- Sign off a measurement or part using a gauge that is out of calibration.
- Tamper with gauges or records to pass inspection.
- Ignore a gauge reading that shows an unsafe condition, such as high pressure.
- Adjust a gauge on equipment it is not authorized to service.
Only with a human decision
- Accepting parts or plant whose safety depends on gauge readings.
- Taking equipment out of service after an abnormal reading.
May
- Read gauges and report values with units and time.
- Check gauges against calibration records and report those out of date.
Moral aspects Filled
- People rely on honest measurement for safe products, fair trade and plant safety.
- Faked readings have caused industrial disasters.
Who is affected
- Workers near plant
- Customers of measured products
- Inspectors
Owners Filled
Steward
The owner of the equipment; calibration laboratories answer for traceability.
Master systems
- Calibration records of the owner or laboratory
Links to other meta-models Filled
parent
- Q1183543 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.gauge
- Wikidata: Q914462 (https://www.wikidata.org/wiki/Q914462)
Direct properties required Filled
- Gauge form: indicating | comparative | fixed limit | other documented form
- Measurand or checked feature: pressure, thickness, clearance, diameter, thread feature, level or another specified quantity or feature
- Operating principle: mechanical deformation, displacement comparison, fixed geometry, electrical sensing or another documented principle
- Measurement or checking interval: lower and upper bounds with the applicable unit; not applicable where only discrete limits are specified
- Reference basis: absolute, ambient-relative, differential, nominal dimension or specified master
- Resolution or graduation: smallest displayed increment or scale division in the measurand unit; not applicable to fixed limit gauges
- Acceptance limits: specified boundary values and units, with inclusive or exclusive decision rules where applicable
- Measurement performance evidence: applicable error limits, uncertainty statements and calibration or verification records
- Measurement interface: process connection, probe, contact faces, plug, ring, jaws or other specified interface
- Readiness: unassessed | ready within stated conditions | restricted | verification required | out of service
Recognition required Filled
- A dial, display or fixed checking tool, such as a go/no-go plug, marked with range or size.
- Often carries a calibration label with due date.
Capabilities and actions required Filled
- Select a gauge whose measurand, interface and performance suit the intended check.
- Read a value or deviation, or execute a documented limit check.
- Compare an indication or checking feature against an appropriate reference.
- Identify whether zeroing, cleaning, adjustment or further verification is needed.
- Restrict use when wear, damage, overload or missing evidence undermines the result.
Hazards and failure modes required Filled
- A stuck or miscalibrated gauge gives false assurance.
- Pressure gauges can burst if overloaded.
Standards and interfaces required Filled
- ISO 14978, issued by the International Organization for Standardization, establishes general concepts and requirements for geometrical product specification measuring equipment, including relevant dimensional gauges.
- ISO 1938-1, issued by the International Organization for Standardization, specifies requirements for plain limit gauges of linear size.
- ISO/IEC 17025, issued jointly by the International Organization for Standardization and the International Electrotechnical Commission, sets competence requirements for laboratories performing gauge calibration.
Context of use required Filled
- Gauges are used in manufacturing, maintenance, laboratories and everyday equipment to check dimensions or indicate operating conditions.
- An indicating gauge displays a measured value, while a limit gauge checks whether a feature falls within an allowed boundary.
- Selection depends on the quantity being checked, the required accuracy and the conditions in which the gauge will operate.
Sources Filled
- Wikidata item Q914462: gauge - identity and sense of the item
- Wikipedia: Gauge (instrument) - general description of the item
Open questions
- Does vr.tr.gauge denote measuring devices broadly, a narrower instrument class, or another sense of gauge?
- Does an existing Vercy world model already own this concept, and which neighbouring registry entries constrain its boundary?
- Which gauge families belong here, and which need linked specialisations for pressure references, thread checking or other distinctive procedures?
- Which primary sources and issuing-body standards establish performance, verification and safe-use requirements for each included gauge family?
- Which family-specific decision rules and wear limits govern acceptance results near a boundary?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q914462/spec.json