This compound microscope was made by Nachet & Fils. The horseshoe base supports two tapered pillars to which the instrument's tilting body tube is fixed by a swivel joint. The circular stage carries large clips for holding specimens. Below it is the mirror. The instrument is fitted with a condenser. The body-tube is held by a collar mounted on a pillar whose position is adjusted by turning a focusing knob. The tube is fitted with a revolving objective changer. The box contains various accessories including four eyepieces, six objectives, a camera lucida, two Nicol prisms, and a micrometer. Belonged to the Gabinetto degli Invertebrati of the Istituto di Studi Superiori of Florence.