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
|