A late Victorian lacquered-brass transit theodolite. “ A theodolite (/θiːˈɒdəlaɪt/) is a precision instrument for measuring angles in the horizontal and vertical planes. Theodolites are used mainly for surveying applications, and.
Richard Glynne century) Armillary sphere-orrery, ca. 1720 This instrument is a combination of an armillary sphere and a new kind of planetarium called an orrery. It demonstrates the structure of the Copernican universe.