Beck, Conrad, 1864- · London, R. & J. Beck, Ltd. · leaf 71
divisions divided in haH-milUmetres for rough measurement. For fine measurement theobject to be measured is placed in a horizontal position, and thelength is measured in 1/lOth mm. by use of the slanting line onthe right. The image of an object as shown in the diagrammeasures 3*25 mm., because it… … -B—A
Microscopy
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