Definitions
surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles
Word origin
From French alidade, from Spanish alidada, from Arabic العِضَادَة (al-ʕiḍāda), perhaps from عَضُد (ʕaḍud, “upper arm”).
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Sighting instrument”7 letters
02“Surveyor's sighting device”7 letters
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