| gptkbp:instanceOf | gptkb:scientific_instrument 
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                                | gptkbp:category | gptkb:scientific_instrument gptkb:artifacts
 gptkb:astronomical_model
 
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                                | gptkbp:component | gptkb:celestial_sphere rings
 axis
 earth globe (sometimes)
 
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                                | gptkbp:date | 3rd century BCE 
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                                | gptkbp:depictedIn | gptkb:Portuguese_flag gptkb:Portuguese_coat_of_arms
 
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                                | gptkbp:displayedAt | gptkb:British_Museum gptkb:Shanghai_Museum
 Museu de Marinha, Lisbon
 
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                                | gptkbp:material | gptkb:wood brass
 bronze
 iron
 
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                                | gptkbp:notableUser | gptkb:Tycho_Brahe gptkb:Hipparchus
 gptkb:Ptolemy
 gptkb:Zhang_Heng
 
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                                | gptkbp:originatedIn | Ancient Greece 
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                                | gptkbp:relatedTo | gptkb:celestial_globe gptkb:orrery
 gptkb:astrolabe
 
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                                | gptkbp:represents | gptkb:tropics gptkb:meridian
 gptkb:celestial_equator
 ecliptic
 horizon
 polar circles
 
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                                | gptkbp:symbol | gptkb:Portugal gptkb:astronomy
 knowledge
 
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                                | gptkbp:usedBy | gptkb:Chinese_astronomers gptkb:Islamic_astronomers
 European astronomers
 Greek astronomers
 
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                                | gptkbp:usedFor | demonstrating the movement of celestial bodies modeling celestial spheres
 teaching astronomy
 
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                                | gptkbp:bfsParent | gptkb:Hou_Han gptkb:Sceptre_of_the_Armillary
 
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                                | gptkbp:bfsLayer | 8 
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                                | https://www.w3.org/2000/01/rdf-schema#label | Armillary sphere 
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