Dioptra

GPTKB entity

Statements (19)
Predicate Object
gptkbp:instanceOf ancient Greek instrument
gptkbp:component graduated scale
plumb line
sighting tube
gptkbp:date 3rd century BCE
gptkbp:describedBy gptkb:Hero_of_Alexandria
https://www.w3.org/2000/01/rdf-schema#label Dioptra
gptkbp:inventedBy gptkb:ancient_Greeks
gptkbp:material bronze
wood
gptkbp:similarTo gptkb:theodolite
gptkbp:usedFor astronomical observations
surveying
measuring angles
gptkbp:usedIn gptkb:astronomy
land surveying
construction of aqueducts
gptkbp:bfsParent gptkb:Heron_of_Alexandria
gptkbp:bfsLayer 5