. Elementary chemical microscopy. Microscopy; Microchemistry. MECHANICAL STAGE 139 the pillar. This ensures replacing the stage each time in exactly the same position. Coordinate movements are obtained by the milled wheels T. T. The graduated scales in each instance are supplied with verniers v, v. The object slide is held in position by the fingers F, /; a spiral spring in the joint of F presses it firmly against the corner of the slide. The screws a, a permit. Fig. 70. Attachable Mechanical Stage. changing the distance between F and /, thus providing for the use of object slides or cells of
. Elementary chemical microscopy. Microscopy; Microchemistry. MECHANICAL STAGE 139 the pillar. This ensures replacing the stage each time in exactly the same position. Coordinate movements are obtained by the milled wheels T. T. The graduated scales in each instance are supplied with verniers v, v. The object slide is held in position by the fingers F, /; a spiral spring in the joint of F presses it firmly against the corner of the slide. The screws a, a permit. Fig. 70. Attachable Mechanical Stage. changing the distance between F and /, thus providing for the use of object slides or cells of different sizes. A more convenient form of removable mechanical stage is shown in Fig. 71. In this type a narrow slot is cut into the micro- scope stage. The opening thus made is provided with beveled grooves at the sides, into which slips a sliding metal plate pro- vided with coordinate movements, M. When a perfectly plain stage is wanted the mechanical stage is removed and a plain black metal plate, P, is inserted in its place. The coordinate movements of the stage are made by rack and pinion actuated through the milled heads H, H'. This stage may be seen in place in Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chamot, Emile Monnin, 1868-1950. New York, Wiley
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectmicroscopy, bookyear1
