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Based on The GD&T Hierarchy

Tec-Ease, Inc. provides the most comprehensive GD&T training and coaching in the industry. Our GD&T courses are designed to keep the participant interested and engaged, while having fun.

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Tec-Ease, Inc. software packages are designed to help train and offer continued support to companies and employees in the industrial manufacturing field.

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Think Boundary, not Bonus - 1994, 2009, 2018 (#22)

(In accordance with the ASME Y14.5-2018 standard)
(In accordance with the ASME Y14.5-2009 standard)
(In accordance with Y14.5M-1994 standard)

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The typical approach to inspecting a feature such as the Ø1.000 hole is to measure the size, calculate a bonus and then try to locate the axis of the hole to see if it is within the allowable position tolerance. Another approach is to inspect the size and make measurements to see if the hole violates the inner boundary (virtual condition). …

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Back to Tips Tip added Jun 2020