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Mr. Dubey • 100.64K Points
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Q. Which of the following method use pendulum in measuring the surface finish?

  • (A) micro interferometer
  • (B) wallace surface dynamometer
  • (C) reflected light intensity method
  • (D) microscopic inspection
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Explanation by: Mr. Dubey
wallace surface dynamo meter is like a friction meter which consists a pendulum in which the testing shoes are present which are clamped to a bearing surface and a spring pressure which is predetermined can be applied.

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