Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 232
t carries either a Zeiss dissectingmicroscope, which with and without its concave eye-lens yields six.different powers, varying from 15 to 100 diameters, or the arm willreceive the very fine Zeiss-Steinheil loups. The instrument is provided with a large plane and concave,mirror on a jointed arm.… … Fig. 161.—Becks binocular dissecting microscope. by the late Mr. R. Beck, is represented in fig. 161. From the anglesof a square mahogany base there rise four strong brass pillars, whichsupport at a height of four inches a brass plate 6^ inches square, havinga central aperture of one inch across ;…
Microscopy
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