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The microscope : an introduction to microscopic methods and to histology (1911)

Gage, Simon Henry, 1851-1944 · Ithaca, N.Y. : Comstock Pub. Co. · leaf 98

An illustration from The microscope : an introduction to microscopic methods and to histology, 1911, leaf 98 — t_. Fig. 69Thread.—Whitworth screw, /. <\,a Y-shaped thread, sides of thread inclined at an angle of 550 to each other, one-sixth of the Vrounded off at the top and the bottom of the thread. Pitch.—36 to the inch. Length of Thread on Object-Class o. 125 in. depth being I So LIGHTING AND FOCUSING…

Microscopy

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