Dividers, Drawing Instruments, Surveying Instruments and others.
Sold objects are listed here
French Level & Sector in Brass, Vayringe a Florence, 17.4 cm x 2.4 cm, Philippe Vayringe (* 1684 in Nouillonpont; † 1745 in Toskana) a french instrument maker.
Non object on sale in auction.
Collection of links regarding scientific instruments in the Web: https://www.pinterest.com/geometricum/scientific-instruments-in-the-web/