Article | REF: R1288 V1

Estimate of uncertainty for thread-measurement standards

Author: Georges-Pierre VAILLEAU

Publication date: December 10, 2007

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8. Virtual diameter on sides

The formulas for calculating the diametral equivalents of the pitch and flank angle errors are : Ep=2ΔPtanα1tanα2Eα=12[L1sinα1tan|Δα1|+L2sinα2tan|Δα2|]

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Virtual diameter on sides
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