Vertical sundial on the east side of the south facade of the north wing. It is dated to the 18th century. It is very similar to the sundial on the west side of the facade.

References:

1. Puhmajer, Petar; Kučinac, Teodora (2008) "Facade of the Pauline Monastery in Lepoglava.", Proceedings of the Institute for the History of Art, 32, 151-166. link
2. Puhmajer, Petar (2013) "Construction and transformation of the complex of the Pauline monastery and the church of St. Mary in Lepoglava.", Yearbook of the Protection of Cultural Monuments of Croatia 37/38, 81-100. link