both those indicated as and those not usuallyindicated on drawings, such90" angles or the angles of regular polygons c) linear and angular dimensions produced by machining assembled parts: d) workpiece featuresfor which no individual tolerancesof form and position are indicated. external radii and chamfer heights for broken edges (cf. Tolerances General as specified apply standard in this for: lineardimensions,such as externalsizes,internal sizes, Step sizes. Thisstandardisintended lo ensurethat aildrawings prepared to date in which general tolerances have been specified on the basis of DIN 7168 will remain intelligible and be interpreted correctly, and ais0 to informthe user of this standardthat, for allnew designs, tolerances areto be specified on the basisof I S 0 2768 Parts 1 and 2. a comma has been usedthroughout as the decimal marker. in keeping with current practicein standards published by the international Organization for Standardization (iS0). See also clause 1 and the Explanatory notes. General tolerances for these now are covered byI S 0 2768 Parts 1 and 2. This standardis not to be used new for designs. Supersedes May1981 edition of DIN 7168 Part 1 and July 1986 edition of DIN-7168 Part 2. General tolerances for linear and angular dimensions and geometrical tolerancesĪilgemeintoieranzen: Längen- und Winkelmaße, Form und Lage (nicht f i r Neukonstruktionen)
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