This microscope was introduced in 1902 by the Spencer Lens Company of Buffalo, New York. The model featured below was redrawn from a photograph of the original microscope, which is part of the Billings microscope collection at Walter Reed Army Hospital in Washington DC.

The pillar, stage and body tube are supported by a heavy horseshoe base that is painted black. A handle is incorporated into the tubular pillar, and the stationary stage has a vulcanite top with a pair of clips to secure the specimen. Focus is achieved through a rack and pinion mechanism controlled by a large knob on the pillar adjacent to the body tube. The double mirror is supported on the underside of the stage by means of a gimbal connected to a swinging arm.

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