In mechanical design, product manufacturing and product maintenance, geometrical characteristics such as straightness, flatness, roundness and cylindricity are very important, first in detail design with the specification of their tolerances in order to translate functional requirements into geometrical requirements and later, in the verification of the manufactured workpieces (measurement procedure) for compliance with the design objective. Coordinate Measuring Machines are very expensive

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... ment widely used to perform automated measurement, to inspect and to analyse engineering components in order to check their conformity with the specifications. This work presents augmented reality systems for conveying these concepts and to provide an introduction to the straightness and flatness evaluations. These systems intend to enable the users to explore the related concepts for training or educational purposes in a more immersive way.