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Rounding

Numbers are everywhere around us. They help us to decide on purchases, to plan our retirement, and to track everything from diet and exercise to services we buy. Numbers in the form of measurements are the lifeblood of industrial inspection. The field of NDT uses numbers to measure every physical phenomenon: electricity, thermal expansion, magnetism, light, pressure, viscosity, and ionizing radiation. For this reason, the NDT inspector needs math. There are several situations in which a technician may need to round off a measurement datum.

References
  1. Taylor, B.N. and C.E. Kuyatt. NIST Technical Note 1297, Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results. Gaitherburg, MD: National Institute of Standards and Technology (1994).
  2. JCGM 200, International Vocabulary of Metrology — Basic and General Concepts and Associated Terms (VIM). Sèvres, France: Bureau International des Poids et Mesures (2012).
  3. IEEE/ASTM SI 10, Standard for Use of the International System of Units (SI): The Modern Metric System. New York, NY: IEEE (2011).
  4. Thompson, A. and B.N. Taylor. NIST SP 811, Guide for the Use of the International System of Units (SI). Gaitherburg, MD: National Institute of Standards and Technology (2008).
  5. Nondestructive Testing Handbook, third edition: Vol. 10, Nondestructive Testing Overview. Columbus, OH: American Society for Nondestructive Testing (2012): p 19-29.
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