The microscope; an introduction to microscopic methods and to histology (1899)
Gage, Simon Henry, 1851-1944 · Ithaca, N. Y., Comstock publishing company · leaf 85
SS … 61. 62. Figs. 61-63. Sectional Views of the two Forms of the Marker. Fig. 61. The simplest form of marker. It consists of the part SS with themilled edge (M). This part bears the Society or objective screzufor attaching themarker to the microscope. R. Rotating part of the marker. This bears the…
Microscopy -- Technique
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