The microscope has a fusee chain coarse focus and stage tilting fine focus.

The following was extracted from The Illustrated Price List of Microscopes, Microscopic Apparatus, Lenses, &c., for Sale by T. H. McAllister, 1876.

T.H. McAllister's

Student's Microscope

A neat serviceable instrument, well made, and in every way adapted for a good "working" Microscope. Particularly recommended to Physicians and Students of Medicine, as embracing a range of magnifying powers, ample to meet the ordinary demands of medical men. The powers of 50 and 75 diameters answer admirably for the examination of Sections of Bone and Teeth, Tissues of the Body, &c., while the powers of 250 and 400 diameters will be of great value for determining the characteristics of Blood Globules, Pus, Urinary Salts, &c, Many interesting minutiae of insects and vegetable life can be readily observed by the lower powers, and with the highest power, 400 diameters, delicate striae of diatoms 30,000 lines to the inch call be resolved.

The STUDENT'S MICROSCOPE stands twelve inches high when inclined as shown in the engraving. The Base is Bronzed, with uprights to receive the axis upon which the body inclines. The Body is of Brass with Extension Draw Tube. The coarse adjustment for focus is by a delicate watch chain, controlled by large milled head on each side of the tube. This adjustment is extremely sensitive and exact, even with the highest power of the instrument. There is also a fine micrometer adjustment attached to the stage. The Stage is of Brass with Brass Springs to hold the Object, and with Diaphragm plate beneath; Stage Forceps attach to the Stage, which are very convenient for holding an insect, flower, etc., while being examined by a low magnifying power. The Concave and Plain Mirrors are mounted with universal motion on jointed bar. The mounting for the Objectives is made with the "London Society Screw."