Where does “dioptra” come from?
dioptra (Spanish) comes from Latin dioptra, from Ancient Greek διοπτρα — to see through.
dioptra (Spanish): a type of alidade
Definitions
- a type of alidade
dioptra (Spanish) comes from Latin dioptra, from Ancient Greek διοπτρα — to see through.
dioptra (Spanish): a type of alidade