CALCULATORS / FOUNDATIONS

Tolerances, fits and metrology

Separate manufacturing tolerances, uncertainty and numerical error.

nominal dimensions, limits, signs → assembly minimum and maximum

standard deviations, sensitivities, correlations → assembly standard deviation, conditional yield

shaft and hole size limits → minimum and maximum clearance or interference

material expansion, size limits, temperature range → temperature-dependent fit interval

input uncertainties, sensitivities, covariance → combined standard uncertainty

measurement range, counts, required tolerance → resolution, quantization contribution

reference points, observed outputs, uncertainty → gain, offset, residuals

repeated measurements, operators or setups → variation components, summary uncertainty

reference length, pixel correspondences, perspective assumptions → pixel scale, length estimate, limitations

lever arm, angular error, offsets → lateral error, sensitivity