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
|