dioptra

GPTKB entity

Statements (17)
Predicate Object
gptkbp:instanceOf ancient Greek surveying instrument
gptkbp:component graduated scale
pivoting arm
sighting rods
gptkbp:describedBy gptkb:Hero_of_Alexandria
https://www.w3.org/2000/01/rdf-schema#label dioptra
gptkbp:material bronze
wood
gptkbp:originatedIn gptkb:ancient_Greece
gptkbp:predecessor gptkb:theodolite
gptkbp:usedBy Greek astronomers
Greek surveyors
gptkbp:usedFor astronomical observations
measuring angles
surveying land
gptkbp:bfsParent gptkb:Hipparchus
gptkbp:bfsLayer 5