Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 273
ingadjustments, which permit the objec-tives to be centred to one another;and the second is, that they haveadapters to equalise the length of theobjectives, so when a change of objec-tives is made little change of focaladjustment is required. Figs. 193,194 show the nature of this arrange-ment. In… … Pig. 194.—The objective detachedfrom the body-slide. studs into the slots and giving the objective a quarter of a turn, the studsrun up the inclined planes, thus causing the flanges to face up tightly. Mr. Nelson has pointed out a far better and simpler methodwhich dispenses with all extra…
Microscopy
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