Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 189
for each revolution. The spiralspring below H keeps the hearings in do econtact. Of course any desired speed can be attained by profier combinetion of the threads : thus 32 and :>U would givefor each revolution, and 31 and 30 would give This screw has provided for the Continental model w ha t… … Fig. 1-27.—Campbellsdifferential screwfine adjustment. , ,,t h of an incht h of an inch. THE STAGE OF THE MICROSCOPE its employment in photo-micrography, with excellent results ; andAve hope that it may become the general line adjustment for thisform of microscope in place of the old form of…
Microscopy
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