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Electron Microscopy Sciences Chalkley Point Array Graticle NG52, 16mm
Supplier: Electron Microscopy Sciences 6803416
Eyepiece graticle is used to quickly determine the relationship of components to each other using random sampling. Curtis gives an example of its application, where a researcher may want to see whether or not a certain drug affects the volume proportion of cell types in a given organ. With this graticule the proportion of points lying over the image of one type of component is statistically proportional to the area occupied by that component. The 25 points of the array are placed over the field of view at random, so that a comparison can be made between the number of points touching the one type of component, with number touching the other type of component in each viewing. A series of observations will yield an increasingly accurate ratio of the comparative incidence of each type of particle.
Size: 16 mm
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