sector (mathematical instrument)

GPTKB entity

Statements (21)
Predicate Object
gptkbp:instanceOf mathematical instrument
gptkbp:alsoKnownAs proportional compass
gptkbp:component pivot
two arms
gptkbp:has_scale logarithmic scales
trigonometric scales
https://www.w3.org/2000/01/rdf-schema#label sector (mathematical instrument)
gptkbp:inventedBy gptkb:Galileo_Galilei
late 16th century
gptkbp:material brass
ivory
gptkbp:relatedTo gptkb:navigation
gptkb:slide_rule
gptkbp:used_in gptkb:engineer
architect
artillery officers
gptkbp:usedFor gptkb:geometry
calculator
proportional measurement
gptkbp:bfsParent gptkb:Book_on_the_Sector_Figure
gptkbp:bfsLayer 7