button

Button role

Record evidence for fastening, press-control or combined use without inferring function from appearance alone.

1. Does this component retain a fastening counterpart, accept a press input, or perform both roles? definition
2. What observation, host documentation or other evidence establishes that role? provenance

Modelled button extent

Record whether the identified thing is a fastening body, a removable control cap or a larger integrated component.

1. Where does this button end and its mounting, counterpart or switch mechanism begin? boundary
2. What observable feature distinguishes it from an ornament, knob, slider or mating snap fastener? definition

Counterpart and access fit

Record fit to a hole or loop for fastening, or clearance and contact access for a control button.

1. Which face, thickness, shank or clearance dimensions determine whether this button works with its identified counterpart? measurement
2. Can it pass through and retain the fastening counterpart, or move through its intended press path, without interference? measurement

Attachment security

Record the retention method and evidence of looseness or separation at that interface.

1. Is the button retained by thread through holes, a shank, a rivet, a clip or another identifiable mounting? definition
2. What observed movement, thread damage or mounting defect indicates that retention needs attention? measurement

Closure engagement

Record whether the counterpart is fully retained and whether tension or distortion compromises the closure.

1. Has the button passed fully through the intended hole or loop, leaving the counterpart retained behind its working face? measurement
2. Can the closure be released through its intended motion without forcing the button, attachment or counterpart? action

Actuation and return

Record press movement, tactile or other feedback, return or latching behaviour, and separately verified downstream response.

1. What force, travel and release behaviour are observed, and what evidence establishes the expected behaviour for this button? measurement
2. What evidence independently confirms whether pressing this button produced the intended action? provenance

Defects affecting use

Record cracks through sewing holes or shanks, broken retaining edges, loose caps and obstructions to pressing.

1. Are there cracks, worn retaining edges, loose attachment features or contaminants that interfere with this button's specific function? measurement
2. Does the observed defect permit continued use, require restricted use or justify taking the button out of service, according to available evidence? action

Justified button action

Record the known function, authority and compatibility evidence needed for the proposed operation or intervention.

1. Before pressing this control, what establishes its function, the relevant system state and the agent's authority to trigger that action? action
2. For reattachment or replacement, which dimensions, mounting details, material properties and markings must match the host's requirements? boundary

Kinds and varieties

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these kinds and varieties hold for the sense of button this model covers, and on what evidence? provenance

Identifiers and schemes

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these identifiers and schemes hold for the sense of button this model covers, and on what evidence? provenance

Standards and regulation

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these standards and regulation hold for the sense of button this model covers, and on what evidence? provenance

Real-world use

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these real-world use hold for the sense of button this model covers, and on what evidence? provenance

Typical measurements

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these typical measurements hold for the sense of button this model covers, and on what evidence? provenance

Failure modes and hazards

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these failure modes and hazards hold for the sense of button this model covers, and on what evidence? provenance

Regional variation

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these regional variation hold for the sense of button this model covers, and on what evidence? provenance

Neighbouring kinds and how to tell them apart

Reported by the breadth pass; each item needs checking against its source before it becomes normative.

1. Which of these neighbouring kinds and how to tell them apart hold for the sense of button this model covers, and on what evidence? provenance