Non-Circularity in Form of Parameter Ur

This formula is required for the tolerance calculations of the non-circularity.

U_{r} = \frac{d_{\max} - d_{\min}}{d_{nom}} U_{r} \leq U_{r, \max}

D_max	Largest diameter
d_min	Smallest diameter
d_nom	Nominal diameter
U_r,max	Non-circularity from the manufacturer tolerance quality class

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