{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.indian-club","code":"thing-q2804113","url":"https://ver.cy/models/thing/q2804113/","name":"Indian club","alternateNames":[],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"An Indian club is a hand-held exercise implement with a narrow handle and an enlarged, weighted body, swung in controlled patterns, often as one of a pair, for physical conditioning and coordination.","purpose":"Enable an agent to recognise an Indian club as a club-shaped exercise implement, assess its handling and condition, and determine its suitability for an intended swinging activity.","scope":{"in":["Identification as an exercise club and boundaries with neighbouring club types","Body, handle, grip-end geometry, materials and construction","Mass distribution and its implications for swinging","Compatibility with single-club and paired-club use","Physical condition, inspection and handling restrictions"],"out":["The broader club concept, including striking weapons","Club-swinging techniques, routines and competitions as activities","User health, diagnosis, rehabilitation prescriptions and training programmes","Juggling clubs and specialised weighted exercise clubs except where boundary comparison is needed","Manufacturers, product lines and commercial listings as independent entities","Historical traditions and cultural practices beyond evidence needed to identify the implement"],"boundaries":[]},"distinguishingFeatures":["Evidence identifies its intended function as swinging exercise rather than striking; a club-like silhouette alone is insufficient.","A graspable handle leads into an enlarged body whose mass distribution must be considered relative to the hand.","Identification as a juggling club requires separate evidence about throwing and catching use; superficially similar shapes do not establish equivalence.","Labels such as Indian club, meels, gada or clubbell require comparison of documented use and construction rather than automatic synonym mapping.","A pair consists of two implements with a matching relationship; pairing does not make each implement a different kind of object."],"structure":{"bundles":[{"id":"exercise-club-identity","name":"Exercise-club identity","description":"Establishes what makes the registered thing an Indian club within the broader club concept.","layers":[{"id":"purpose-and-identification","name":"Purpose and identification","description":"Records the evidence for interpreting the implement as club-swinging equipment.","findings":[{"id":"exercise-purpose-evidence","name":"Exercise purpose evidence","description":"Identification should connect the implement to intended swinging exercise through evidence rather than shape alone.","questions":[{"text":"What documented purpose identifies this implement as an Indian club?","id":"exercise-purpose-evidence-q01","kind":"definition"},{"text":"Does that identification come from a maker, collection record, historical source or later attribution?","id":"exercise-purpose-evidence-q02","kind":"provenance"}]}]},{"id":"neighbouring-club-boundaries","name":"Neighbouring club boundaries","description":"Separates this specialisation from the generic club and from adjacent equipment kinds.","findings":[{"id":"specialisation-without-duplication","name":"Specialisation without duplication","description":"The model adds exercise-specific distinctions while leaving generic club properties and separately registered equipment to their own models.","questions":[{"text":"Which properties distinguish this exercise implement from the broader club entry?","id":"specialisation-without-duplication-q01","kind":"boundary"},{"text":"What evidence separates or connects this use of Indian club with juggling club, meels, gada and clubbell?","id":"specialisation-without-duplication-q02","kind":"boundary"}]}]}]},{"id":"grip-and-body-form","name":"Grip and body form","description":"Captures the geometry and construction that govern how the hand controls the club body.","layers":[{"id":"hand-contact-geometry","name":"Hand-contact geometry","description":"Describes the usable gripping region and features that affect retention.","findings":[{"id":"usable-handle-and-grip-end","name":"Usable handle and grip end","description":"Handle dimensions, taper and end shape need to be recorded together when assessing a proposed grip.","questions":[{"text":"What are the usable grip length, diameter profile and grip-end dimensions in millimetres?","id":"usable-handle-and-grip-end-q01","kind":"measurement"},{"text":"Does the intended grip permit the required hand movement without slipping, pinching or interference from the grip end?","id":"usable-handle-and-grip-end-q02","kind":"action"}]}]},{"id":"body-profile-and-assembly","name":"Body profile and assembly","description":"Describes the club's exterior envelope and how its mass-bearing parts are constructed.","findings":[{"id":"body-construction-evidence","name":"Body construction evidence","description":"The model should distinguish observed exterior form from verified information about internal construction.","questions":[{"text":"What are the overall length, maximum body diameter and locations of major profile changes?","id":"body-construction-evidence-q01","kind":"measurement"},{"text":"What evidence establishes the material, internal construction and any handle-to-body joints?","id":"body-construction-evidence-q02","kind":"provenance"}]}]}]},{"id":"mass-and-swing-response","name":"Mass and swing response","description":"Records the properties needed to compare how clubs respond when rotated about the hand.","layers":[{"id":"mass-and-balance","name":"Mass and balance","description":"Establishes per-club mass and the location of the centre of mass.","findings":[{"id":"grip-referenced-balance","name":"Grip-referenced balance","description":"Balance measurements require a declared reference point so comparisons remain meaningful.","questions":[{"text":"What is the measured mass of this individual club, excluding packaging and its companion?","id":"grip-referenced-balance-q01","kind":"measurement"},{"text":"Where is its centre of mass relative to the declared grip reference point?","id":"grip-referenced-balance-q02","kind":"measurement"}]}]},{"id":"rotational-comparison","name":"Rotational comparison","description":"Supports handling comparisons without treating similarly weighted clubs as interchangeable.","findings":[{"id":"rotation-axis-and-configuration","name":"Rotation axis and configuration","description":"Any rotational measurement or estimate must identify the grip axis and the club configuration to which it applies.","questions":[{"text":"Is a moment-of-inertia measurement or estimate available, and what axis and method does it use?","id":"rotation-axis-and-configuration-q01","kind":"measurement"},{"text":"Would substituting this club change the leverage or rotational demand of the intended movement?","id":"rotation-axis-and-configuration-q02","kind":"action"}]}]}]},{"id":"pairing-and-swing-clearance","name":"Pairing and swing clearance","description":"Relates individual clubs to companion implements and the space required for a specified activity.","layers":[{"id":"companion-matching","name":"Companion matching","description":"Makes the intended relationship between two clubs explicit.","findings":[{"id":"pair-equivalence","name":"Pair equivalence","description":"A matching claim should specify which dimensions and handling properties were compared.","questions":[{"text":"Is this club intended for use alone, with a matched companion or with a deliberately different companion?","id":"pair-equivalence-q01","kind":"definition"},{"text":"How do the proposed companions differ in mass, length, grip geometry and centre-of-mass position?","id":"pair-equivalence-q02","kind":"measurement"}]}]},{"id":"movement-envelope","name":"Movement envelope","description":"Links club geometry to a specified movement and its surroundings.","findings":[{"id":"club-path-clearance","name":"Club-path clearance","description":"Clearance is assessed for the intended movement, including the second club where present.","questions":[{"text":"What space does the club occupy throughout the specified movement, given its length and body profile?","id":"club-path-clearance-q01","kind":"measurement"},{"text":"Can that movement be performed with clearance from the user's body, the companion club, other people and surrounding objects?","id":"club-path-clearance-q02","kind":"action"}]}]}]},{"id":"swinging-integrity-and-care","name":"Swinging integrity and care","description":"Connects defects and maintenance to the demands of holding and swinging the implement.","layers":[{"id":"grip-and-structural-inspection","name":"Grip and structural inspection","description":"Examines the surfaces and structural transitions involved in retaining the club during movement.","findings":[{"id":"retention-and-breakage-defects","name":"Retention and breakage defects","description":"Inspection should consider grip contamination, surface damage, cracks and looseness where applicable to the construction.","questions":[{"text":"Are there splinters, cracks, slippery deposits, deformation or loose joints affecting the handle, grip end or body?","id":"retention-and-breakage-defects-q01","kind":"measurement"},{"text":"Which observed defects require withdrawal from swinging pending repair or further assessment?","id":"retention-and-breakage-defects-q02","kind":"action"}]}]},{"id":"care-and-return-to-use","name":"Care and return to use","description":"Preserves usable grip and structural condition through construction-specific care.","findings":[{"id":"care-effects-on-handling","name":"Care effects on handling","description":"Cleaning, refinishing and repair can alter grip, mass or balance and therefore require appropriate reassessment.","questions":[{"text":"What maker or material-specific evidence supports the proposed cleaning, storage or repair method?","id":"care-effects-on-handling-q01","kind":"provenance"},{"text":"After treatment or repair, what grip, integrity and balance checks are needed before returning the club to swinging use?","id":"care-effects-on-handling-q02","kind":"action"}]}]}]},{"id":"evidence-and-external-alignment","name":"Evidence and external alignment","description":"What the world already says about this thing, gathered so the model can be checked against it.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-confidence-notes","name":"Check these first","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these check these first hold for the sense of Indian club this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","kind":"provenance"}]},{"id":"evidence-kinds","name":"Kinds and varieties","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these kinds and varieties hold for the sense of Indian club this model covers, and on what evidence?","id":"evidence-kinds-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these real-world use hold for the sense of Indian club this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-measurements","name":"Typical measurements","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these typical measurements hold for the sense of Indian club this model covers, and on what evidence?","id":"evidence-measurements-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of Indian club this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-regional-variation","name":"Regional variation","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these regional variation hold for the sense of Indian club this model covers, and on what evidence?","id":"evidence-regional-variation-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of Indian club this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Identify Indian clubs and report their weight, material and condition.","Advise starting with light clubs and clear space around the person swinging them."],"mustNot":["Recommend swinging heavy clubs near other people, children or breakable objects.","Present a cracked or split club, or one with a loose handle, as safe to use.","Advise a person with a shoulder injury on routines without referring them to a qualified professional.","Describe a club as a weapon or suggest using it to strike anyone."],"requiresHuman":["Setting a training programme for a person with an injury or medical condition.","Restoring or reworking an antique club with historical value."]},"ethics":{"considerations":["A swung club can injure bystanders or the user if it slips.","Antique clubs are also historical sports objects and can be damaged by careless use."],"affectedParties":["The person exercising","People nearby","Collectors of antique equipment"]},"owners":{"steward":"The person who owns the clubs.","roles":[],"masterSystems":[]},"relations":[{"target":"Q768186","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.indian-club","Wikidata: Q2804113 (https://www.wikidata.org/wiki/Q2804113)"]},"properties":{"applicability":"required","items":["Identification basis: documented exercise purpose | attributed exercise purpose | unresolved","Overall length: mm","Club mass: kg per implement","Usable grip geometry: usable handle length and minimum/maximum grip diameter in mm","Grip-end form: flared | knobbed | unflared | other documented form","Centre of mass relative to grip: mm from a declared grip reference point along the longitudinal axis","Moment of inertia about a defined grip axis: kg·m², with axis and measurement or estimation method","Construction: material, solid or hollow body, one-piece or joined construction, fixed or adjustable mass","Companion-club relationship: unpaired | intended companion identified | verified matched pair | mismatch unresolved","Swinging condition: unassessed | no relevant defect observed | restricted use | withdrawn pending assessment"]},"recognition":{"applicability":"required","items":["A bottle-shaped club with a narrow handle and a knob at the end, swelling to a heavy body.","Usually wooden, sometimes metal or plastic, and often in matched pairs.","Modern clubs may carry a weight marking; antique ones are often painted or turned in hardwood."]},"capabilities":{"applicability":"required","items":["Identify an implement as an Indian club using documented purpose and physical evidence.","Measure grip geometry, mass and balance to compare candidate clubs.","Assess whether two clubs form a suitable pair for a specified activity.","Estimate the clearance required by a specified club-swinging movement.","Inspect the handle, body and any joints before permitting swinging.","Select material-appropriate care or withdraw a damaged club pending assessment."]},"hazards":{"applicability":"required","items":["The club slips from a sweaty hand and strikes someone nearby.","Overuse or poor technique strains the shoulder, wrist or elbow.","A split or loose handle fails during a swing."]},"interfaces":{"applicability":"required","items":["Regulation (EU) 2023/988 on general product safety, issued by the European Parliament and the Council of the European Union, applies to Indian clubs supplied as consumer products in the European Union within its scope."]},"context":{"applicability":"required","items":["Indian clubs are used in physical conditioning, gymnastics and movement practice through controlled swinging patterns.","They are commonly encountered as paired implements for developing coordination, shoulder mobility and muscular endurance."]}},"sources":[{"title":"Wikidata item Q2804113: Indian club","url":"https://www.wikidata.org/wiki/Q2804113","note":"identity and sense of the item"},{"title":"Wikipedia: Indian club","url":"https://en.wikipedia.org/wiki/Indian_club","note":"general description of the item"}],"openQuestions":["Which authoritative sources establish the intended boundary of this registry entry, especially its relationship to meels, gada and modern clubbells?","Does an existing Vercy world model already cover Indian clubs, requiring this registry entry to link to that model?","What documented dimensional and mass ranges represent relevant Indian-club traditions and contemporary designs without imposing an invented universal specification?","Are there applicable product standards, inspection criteria or manufacturer-supported matching tolerances specifically relevant to Indian clubs?","Which repair and rejection criteria are supported for the materials and constructions actually included within this entry?"],"resources":{"spec":"/models/things/publications/thing-q2804113/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q2804113/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T10:27:52Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:29+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}