The microscope; an introduction to microscopic methods and to histology (1901)
Gage, Simon Henry, 1851-1944 · Ithaca, N.Y. Comstock publishing company · leaf 133
valuation of one graduationbeing so small, even the smallest object to be measured would require severalgraduations to measure it. In ocular micrometers with fixed lines, small objectslike bacteria might not fill even one space, therefore estimations, not measure-ments, must be made. For large… … Fig. 107. Filar Ocular Micrometer with Field A (Bausch & Lomb, Optical Co.). § 175. Varying the Ocular Micrometer Valuation.—Anychange in the objective, the ocular or the tube-length of the microscope,that is to say, any change in the size of the real image, produces a cor-responding change in…
Microscopy
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