About: Key relevance

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In master locksmithing, key relevance is the measurable difference between an original key and a copy made of that key, either from a wax impression or directly from the original, and how similar the two keys are in size and shape. It can also refer to the measurable difference between a key and the size required to fit and operate the keyway of its paired lock. Key relevance cannot be deduced from a key code, since the key code merely refers to a central authoritative source for designed shapes and sizes of keys.

Attributes	Values
rdf:type	yago:WikicatMechanicalStandards yago:Abstraction100002137 yago:Cognition100023271 yago:Concept105835747 yago:Content105809192 yago:Idea105833840 yago:Measure100033615 yago:PsychologicalFeature100023100 disease yago:Standard107260623 yago:SystemOfMeasurement113577171 yago:WikicatEngineeringConcepts
rdfs:label	Key relevance (en)
rdfs:comment	In master locksmithing, key relevance is the measurable difference between an original key and a copy made of that key, either from a wax impression or directly from the original, and how similar the two keys are in size and shape. It can also refer to the measurable difference between a key and the size required to fit and operate the keyway of its paired lock. Key relevance cannot be deduced from a key code, since the key code merely refers to a central authoritative source for designed shapes and sizes of keys. (en)
foaf:depiction
dcterms:subject	Mechanical standards Locksmithing Locks (security device) Engineering concepts
Wikipage page ID	19892614 (xsd:integer)
Wikipage revision ID	1121527386 (xsd:integer)
Link from a Wikipage to another Wikipage	Electronic lock Engineering tolerance Margin of error Process capability Mechanical standards Locksmithing Key blank Key code Keyhole Specification (technical standard) Locks (security device) Locksmithing Backlash (engineering) Engineering concepts Bitting (key) Milling machine Mechanical engineering Lock and key Key (lock) Tolerance stacks Mold (casting)
Link from a Wikipage to an external page	http://www.historyofkeys.com/locks-history/history-of-locks/ https://secure.assaabloy.de/images/catalog/mediacockpit/IKON/orig/Technische_Erlaeterungen_DIN_EN_EN.pdf
sameAs	Key relevance Key relevance Key relevance Key relevance
dbp:wikiPageUsesTemplate	dbt:Convert dbt:Reflist dbt:Short_description dbt:Locksmithing
thumbnail	wiki-commons:Special:FilePath/Key-Relevance.jpg?width=300
has abstract	In master locksmithing, key relevance is the measurable difference between an original key and a copy made of that key, either from a wax impression or directly from the original, and how similar the two keys are in size and shape. It can also refer to the measurable difference between a key and the size required to fit and operate the keyway of its paired lock. No two copies of keys are exactly the same, even if they were both made from key blanks that are struck from the same mould or cut from the same duplicating/milling machine with no changes to the bitting settings in between. Even under these favorable circumstances, there will be minute differences between the two key shapes, though their key relevance is extremely high. In all machining work, there are measurable amounts of difference between the design specification of an object, and its actual manufactured size. In locksmithing, the allowable tolerance is decided by the range of minute differences between a key's size and shape in comparison to the size and shape required to turn the tumblers within the lock. Key relevance is the measure of similarity between the key and the optimal size needed to fit the lock, or it is the similarity between a duplicate key and the original it is seeking to replicate. Key relevance cannot be deduced from a key code, since the key code merely refers to a central authoritative source for designed shapes and sizes of keys. Typical modern keys require a key relevance of approximately 0.03 millimetres (0.0012 in) to 0.07 millimetres (0.0028 in) (accuracy within 0.75% to 1.75%) in order to operate. (en)
gold:hypernym	Difference
prov:wasDerivedFrom	wikipedia-en:Key_relevance?oldid=1121527386&ns=0
page length (characters) of wiki page	4075 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Key_relevance
is Link from a Wikipage to another Wikipage of	Roland Berger (company) Engineering tolerance Margin of error Measurement Pin tumbler lock Lock and key Key blank
is foaf:primaryTopic of	wikipedia-en:Key_relevance

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