The following was extracted from the Illustrated Price List of Microscopes for Sale by T. H. McAllister Manufacturing Optician, No. 49 Nassau Street, New York 1876. McAllister was a New York sales agent for Zentmayer microscopes.
ZENTMAYER'S U. S. ARMY HOSPITAL MICROSCOPE
Was designed and constructed for the U. S. A. Medical Department in 1863, but it has since been very much improved. The Stand is sixteen inches high when arranged for use. Body, fine adjustment, and draw-tube are precisely the same as those of the "Intermediate". The bar is supported by one stout pillar. It has plane and concave mirrors, mounted similar to the former. The stage is made of a piece of plate glass, perforated in the centre, with brass mountings to receive the objects, and stage forceps; has also a stop for Maltwood's finder, and is kept down on the stage plate by a spring with an ivory pointed screw, similar to the revolving stage of the "Intermediate". The accessories are attached to a short tube below the stage, which may be removed when oblique illumination is required. Simplicity, steadiness, and convenience are the merits of this Microscope.
The binocular arrangement differs from the former only in tbe mode of adjusting the eye-piece for the distance of the eyes of different persons, which is accomplished by a connecting bar.
Binocular Body; with 4 Eye-pieces; 8/10 inch objective, 32 degrees angular aperture; 1/5 inch, 85 degrees angular aperture; Bull's-eye; Camera Lucida; Stage Micrometer, and Mahogany Case............................................... $185 00
Monocular Body; with 2 eye-pieces, and same accessories as above..................................... $136 00
The above is the manner in which the Stand is fitted out for the United States Goverment Hospitals; it may, however, be fitted out, if so desired, with any object-glasses or accessories from the lists.
The United States Army Hospital Model microscope was originally designed in 1863 for use by the U.S.A. Medical Department during the Civil War. Below is an excerpt from the Army Surgeon's Manual for use of Medical Officers, Cadets, Chaplains, and Hospital Stewards by William Grace published in 1864 concerning the Army microscope:
Additional examples of the United States Army Hospital Microscope
Biographical Sketch of Joseph Zentmayer
See this article from: Proceedings of the American Microscopical Society. Vol. 14, No. 3, 1893
