The microscope : its construction and management : including technique, photo-micrography, and the past and future of the microscope (1893)
Heurck, Henri van, 1838-1909 · London : C. Lockwood ; New York : D. Van Nostrand Co. · leaf 185
ueillumination in all directions. The condenser can, by meansof a rack and pinion, be movedtowards or away from the stage,which is very large. The mirror is double, verylarge, jointed and capable of beingplaced in all positions. The slow movement is veryprecise and very even, the rapidmovement is… … DR. E. HARTNACK. i6S The price of this stand, furnished with all these improvements,;£i2 ; in a simple form it only costs jQq 16s.
Microscopy
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