alidade

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments
• Syn:
alidad
• Hypernyms:
surveying instrument, surveyor's instrument
• Part Holonyms:
theodolite, transit
2. surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles
• Syn:
alidad
• Hypernyms:
surveying instrument, surveyor's instrument