Fig. 67. Arauss Method of Mark-ing Objectives on a Revolving Nose-Piece. As seen in the figure, the equiva-lent focus of the objective is engravedon the diaphragm above the back lensand may be very readily seen in ro-tating the nose-piece. This is of greatadvantage and facilitates the chang-ing of… … Figs. 68-69. The Tolles-Mayall Mechanical Stage {% 116) Both these mechanical stages have the great advantage of large movement in bothdirections, so that a scries may be studied with great certainty and facility, Both havescales and verniers, so that the position of any particular feature of a…
Microscopy
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