Article | REF: R1288 V1

Estimate of uncertainty for thread-measurement standards

Author: Georges-Pierre VAILLEAU

Publication date: December 10, 2007

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9. Calculation examples

  • Example 1. Measurement of an M 64 × 6 threaded plug: uncertainty of virtual flank diameter (table 7 )

    • Instruments and references used

      Length-measuring bench with flat keys and ruler.

      Smooth ∅ 50 mm reference pad.

      Set of three smooth pins with diameter w = 3.205 mm.

    • Measurement method

      Diameter measurement on pigs by direct comparison with smooth reference pad. Pig diameter w is known.

      ...
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