The following was extracted from the 1880 Priced and Illustrated Catalogue of Optical Instrument by James W. Queen & Co.:

3096. QUEEN'S STUDENT'S MICROSCOPE, MONOCULAR, 14 inches high, of highly finished brass; Stage of Glass, with perfectly smooth motions in all directions; Plane and Concave Mirrors; Revolving Diaphragm, which may be entirely removed when extremely oblique illumination is required; Draw-Tube; Rack and Pinion and Fine Screw adjustments for focus. With Upright Walnut Case with brass handle and lock and key

Queen advertisment, 1879