Ma'anar ƙamus na "due kudanci" alkibla ce ta yanki wanda ke nufin madaidaiciyar layi zuwa kudu kai tsaye. Ita ce alkibla wacce ta ke kishiyar arewa kuma an ayyana shi da digiri 180 akan kamfas. "Dole" a cikin wannan mahallin yana nufin "kai tsaye" ko "daidai," kuma "kudu" yana nufin alkiblar kan taswira ko kamfas da ke zuwa kudancin duniya.
