This International Standard describes, with reference to ISO 230-1 and ISO 230-2, geometric tests, machining tests and tests for accuracy and repeatability of positioning axes on general purpose and normal-accuracy external cylindrical and universal grinding machines with a movable table. It also specifies the applicable tolerances corresponding to the above-mentioned tests. This International Standard applies to machines with a swing diameter of up to 800 mm and a distance between centres of up to 4000 mm. This International Standard deals only with the verification of the accuracy of the machine. It does not apply to testing the running of the machine (vibration, abnormal noise, stick-slip motion of components, etc.) nor to machine characteristics (such as speeds, feeds, etc.), which should generally be checked before the testing of machine accuracy. This International Standard provides the terminology used for the principal components of the machine and the designation of the axes with reference to ISO 841. NOTE In addition to terms used in two of the three official ISO languages (English and French), this International Standard gives in annex A (informative) the equivalent terms in German and Italian; these terms are published under the responsibility of the member bodies for Germany (DIN) and Italy (UNI). However, only the terms given in the official languages can be considered as ISO terms.