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Проверка на плоскостта Качество на шисти

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Проверка на плоскостта Качество на шисти

Place a steel flat ruler with a straightness tolerance of 0.1mm on the two diagonal lines of the inspected surface naturally, and measure the gap between the ruler surface and the board surface with a feeler gauge or vernier caliper.

The measured value of the maximum gap indicates the flatness of the board. The measured value is accurate to 0.1mm.

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