The astrolabic quadrant was invented in Egypt in the 11th century or 12th century, and later known in Europe as the "Quadrans Vetus" (Old Quadrant).
Astrolab Kuadran diciptakan di Mesir pada abad ke-11 atau ke-12, dan kelak dikenal di Eropa dengan nama "Quadrans Vetus" (Kuadran Lama).