Выражение встречается в следующем контексте:Using callipers, measure and record the thickness of the cores and metal shims.Mark the width of the core on the face of the core with a pencil.Two cores are placed in each cell.Match the cores so that the combined thickness of the ends of the cores is the same.Cores that measure more than 0,008 cm (0,003 in) from parallel shall not be used.

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