The microscope; an introduction to microscopic methods and to histology (1917)
Gage, Simon Henry, 1851-1944 · [Ithaca, N.Y.] The Comstock Pub. Co. · leaf 311
ts of a semicircular plate ofglass. Along the straight edge or chord the glass is beveled at 450,and near this straight edge is a small, perforated circle, the perfora-tion being in the center of the circle. To use the apertometer themicroscope is placed in a vertical position, and the perforated… … Fig. 177. Abbe Apertometer. is carefully focused on the perforated circle the draw-tube is removedand in its lower end is inserted the special objective which accom-panies the apertometer. This objective and the ocular form a lowpower compound microscope, and with it the back lens of the…
Microscopy · Microscopy -- Technique
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