Beck, Conrad, 1864- · London, R. & J. Beck, Ltd. · leaf 97
ons with a microscope onan optical bench in an almost hori-zontal position, the axis pointingdown only about 15°. The eye-piece is at the eye-height of theobserver when in a sitting position.Prolonged observation of severalhours ceases to be tiring with themicroscope thus arranged. Anordinary… … Fig. 91. THE MICROSCOPE STAND 95 any of the adjusting milled heads. The only other portion ofthe instrument by which it may be lifted is the base or pillar.Valuable instruments may be badly damaged if lifted carelessly.Adjustment slides may be ruined, pinions and screws bent, or theentire…
Microscopy
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