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True Position Calculator
Calculate GD&T true position error and inspection pass/fail status
True Position Standard (ASME Y14.5): True position diameter error is calculated as $2 \times \sqrt{\Delta X^2 + \Delta Y^2}$. If the resulting true position value is less than or equal to the specified tolerance, the part passes.
Coordinate Deviations & Tolerance
Calculation Results
⚠️ True position calculations assume RFS (Regardless of Feature Size) unless a modifier like MMC or LMC is explicitly specified on the engineering drawing.