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Discussion

Rotating a fabric sample between successive measurements is done to

  • A.clean the measuring port between readings
  • B.average out any directional effect of the weave or pile
  • C.increase the total number of readings taken
  • D.reduce the temperature of the sample surface being measured

Answer: B

Pile fabrics in particular measure differently in different orientations. Averaging several orientations gives a far more representative value. Pile fabrics are strongly directional. Averaging orientations is therefore essential.

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