A Jesuit astrolabe?
From an inscription on this astrolabe, we know that the name of the first owner was Philis de Din, who may also have made it, as it does not seem to have come from a commercial workshop. A devotional inscription, "SIT NOMEN DOMIN BENEDICTVM SECVLA SECVLORUM 1595" and the religious symbol suggests that he may have been a Jesuit.
Astrolabe of Philis de Din, French?, 1595 (Inv. 45975)