The tube of this compound microscope is attached by a ball-and-socket joint to a pillar in a wooden base. The pillar also carries the mirror and the stage. The wooden body-tube is covered in black leather. The eyepiece and objective mounts are of ivory. Complete with accessories, contained in the case that serves as base. They include tweezers, ivory and glass disks, and five numbered objectives. The microscope, made by Pietro Patroni, displays similar construction features to the instruments of John Marshall.