Body, mermaid mater, rete, alidade, double rule, bail, and ring. 30 star markers. Rete shows comet of 1618 and novae of 1572, 1600, and 1604. Cavity engraved as tympan for 45°. Tropics, equator, both horizons labeled. Great houses marked. Almucanters labeled by fours from top. Labeled in Latin.
