Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 201
i;6 THE HISTORY AND EVOLUTION OF THE MICKOSCOPE 1. The distance between the centres of the eyes. 2. The mechanical tube-length. Tn order that the binocular may suit persons with narrow … Fig. 131.—The original Ross model. centres to their eyes, the distance between them should not In-greater than 2-i- inches. The mechanical tube-length is 8| inches for R< )SS ORIGINAL MICRi >S<!(>PE the standard tube. Wlien the eye-pieces were home in theirplaces in the tubes they just…
Microscopy
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