A scientific-instrument maker from Modena, Giacomo Lusverg (Jacobus Lusverg in the Latin form used to sign the instrument) lived and worked in Rome from 1672 to his death in 1689. His house and workshop were in the Piazza of the Collegio Romano run by the Jesuit fathers, with whom he was on good terms. He made mathematical, drawing, and surveying instruments, sundials, compasses, and ellipsographs. He was succeeded by his grandson Domenico (1669-1744).