The microscope; an introduction to microscopic methods and to histology (1899)
Gage, Simon Henry, 1851-1944 · Ithaca, N. Y., Comstock publishing company · leaf 45
Fig. 31. Compensating Oculars of Zeiss, with section removed to show the con-struction. The litie A-A is at the level of the upper end of the tube of the micro-scope zvhile B-B represents the lower focal points. It zvill be seen that the mount-ing is so arranged that the lower focal points in all…
Microscopy -- Technique
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