Modern microscopy; a handbook for beginners and students (1912)
Cross, M. I, Cole, Martin J · Chicago, Chicago Medical Book Co. · leaf 140
119 of the stage, otherwise in rotating the objectives they are, withlow powers, apt to foul the rackwork bar of the microscope. Objective Changers by Zeiss.—It will be readily perceivedthat however accurately a revolving nosepiece may be made, thesame portion of the object will not occupy the… … a
Microscopy
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