Simple Magnifier Microscope, by A. Ross

This copper alloy instrument stands on a turned pillar on a flat tripod foot, inscribed with the maker's name and address. A bracket at the top of the pillar supports the stage, secured by two double mill-edged screws. The stage is a rectangular plate with a recessed, circular stage hole and five pinholes of various diameters. A rack and pinion mechanism set at the rear of the stage bracket, raises a vertical post with a triangular cross section from within the pillar. The body tube is held in a sleeve screwed to an arm. A steel peg at the lower end of the arm fits a pinhole at top of the post. A blackened eyecup screws onto the eyepiece which pushes into the top of the body. The objective screws to the nose at the lower end of the body tube.