Signed "J. W. Queen & Co., Philadelphia and New York", this microscope was designed by Dr. Oliver Wendell Holmes around 1873. The model featured below was redrawn from photographs of the original microscope, which is part of the Billings microscope collection at Walter Reed Army Hospital in Washington DC.

The microscope rests on a oval walnut base that supports two turned walnut pillars. Affixed to the pillars is a blackened cast iron limb positioned at a 45 degree angle, and carrying a fixed, blackened split tube with a milled-head screw clamp. The circular brass stage is three inches in diameter and is fixed to the limb. On the front of the base is a vertical rod supporting a slide case and setscrew that holds a rod to which the mirror is attached through a gimbal. The body tube has a short cone nose and a draw tube.

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