Alidade.
n.The portion of a graduated instrument, as a quadrant or astrolabe, carrying the sights or telescope, and showing the degrees cut off on the arc of the instrument
n.alidad, surveying instrument generic term, surveyor's instrument generic term noun, alidad, surveying instrument generic term, surveyor's instrument generic term
Vogais: aiae
Consoantes: ldd
alidad, alaudidae, alate, alday, altitude, alauda, allied, allude, alluded, althaea.