In 1804, with Joseph Liebherr and Joseph Utzschneider, he founded an instrument making business in Munich and from 1807 onwards he was occupied more and more with the technical problems involved in making scientific instruments, in 1809 establishing with Joseph Fraunhofer and Utzschneider, optical works at Benediktbeuern, which were later moved to Munich in 1823.
He took part in several synods convened by Saint Boniface in Germany; in company with Saint Magnus of Füssen, he founded the monastery of Füssen; and with Saint Boniface he dedicated the monastery at Benediktbeuern.