This is a compound monocular with coarse and fine focus, trunnion, square stage, and support for sub-stage diaphragm and for mirror. The tube and trunnions are nickel; the arm and the curvaceous Y-shaped foot are Japanned cast iron; the stage is glass. The eyepiece is missing. The inscription on the tube reads “BAUSCH & LOMB OPTICAL CO. / ROCHESTER. N.Y.” The donor identified this as a Model F made around 1882.
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