Binocular compound microscope

This microscope tube branches into 2 in the center. Each end houses the eyepieces, which can be moved vertically using a rack mechanism controlled by a screw. There is a screw on the back of the tube that rotates to move the tube in millimeter increments for microscopic focusing. It is attached to the pillar with a support that rotates, taking the tube with it. The upper part of the pillar is triangular and can be moved, using a rack mechanism, into a cylindrical outer piece for macroscopic focusing. The top of the rectangular stage features a fine design, which continues into the central hole. The stage also has a top sheet, which functions as a mechanical system allowing the sample to be moved forward, backward and sideways using screws. On the underside is a diaphragm with different-sized holes to control light intensity. The round plano-concave mirror is placed on the pillar and has a good range of movement. It sits on top of the pedestal with an articulated screw that allows the microscope to tilt.

The double pedestal rests on an iron horseshoe-shaped base with a heel that bears an inscription about the microscope's user. It was a thank-you gift from a group of equipment operators who were grateful for the free telegram service they had received for the previous 5 years. Signed June 21, 1887.