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The B5.54 accuracy standard for machine tools recommends standards for determining the accuracy of new computer numerical control machine tools commercially available in the US. Unlike other foreign standards, this one includes every aspect of machine geometry and testing. The test covers linear displacement accuracy, bidirectional accuracy, volumetric performance and contouring performance. It establishes a universal language for machine accuracy, specifying that the inspection of new machines and reporting of their capabilities be performed through three tools. These are the ballbar, laser interferometer and spindle analyzer. Using accuracy statements based on B5.54 test, users of machine tools can now make apples-to-apples comparisons and get immediate results of each testing., The only thing better than knowing your machine tool just made a good part is knowing beforehand that it was going to make a good part. That knowledge is worth [...]