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Abrams Model CB-1 Stereoscope
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Features 2x and 4x selectable magnification. Black nylon
with a soft rubber, anti-fatigue head rest on the frame. All
lenses are optical glass, meniscus type with 4-3/4" focal
length. 2x or 4x magnification may be selected by properly
positioning the legs and lenses. Each set of lenses can be
easily adjusted for your eye requirements. A 50 mm to 75 mm
calibrated scale on the right lens allows for definite settings.
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