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（別ウィンドウに拡大）
Figure 2.4 Relationship between grit, mesh, and micron size. Silicon carbide abrasive powders are generally classified in mesh or grit size. These are plotted on the left of the graph. The right-hand ordinate is scaled for emery grid designation. For conversion to micron size, locate the size range on the proper ordinate and transpose this point to the correct graph line while locating this point on the abscissa. Reverse this procedure to transpose micron to grit size. (Diagram courtesy of Buehler Ltd.)』

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Table 2.1 Dimensions of Mesh or Grit Size Abrasives

Mesh or Grit Size	Microns	Inches
100	150	0.0059
200	75	0.0030
260	60	0.0024
325	45	0.0018
400	38	0.0015
600	30	0.0012
1,200	15	0.00059
1,800	9	0.00035
3,000	6	0.00024
8,000	3	0.00012
14,000	1	0.00004
60,000	1/2	0.00002
120,000	1/4	0.00001

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