Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 556
s recently introduced a binocular microscope of a muchsimpler description than his original one, which possesses the recom-mendation of being applicable to an ordinary instrument without alter-ing its construction or interfering with its usefulness as a monocular. NACHETS BINOCULAR MICROSCOPE. 539… … pound pencil horizontally, and this isreceived upon another prism which drects it to the eye of the observer. Theinstrument, which is not particularlysightly, is represented in the figuresannexed. Fig. 109 is a view of the instrumeut with the parts united; Fig. 110shows the principal parts…
Machinery · Scientific apparatus and instruments
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