![]() ![]() ![]() Standard DIN 875 refers to the squareness of machined surfaces all those parts which require accuracy on one or more corners at 90° use this standard. (Reference temperature +20☌.) Steel rules The levelness tolerance indicates the max deviation between the lowest and highest point. Levelness tolerance (flatness) in μm for different degrees of precision. Table of tolerances according to DIN 874. Table of tolerances according to DIN 866. Tolerance of parallelism of the measuring surfaces at a measuring force of 10 N The most internationally widely used caliper standard ( DIN 862 Vernier calipers requirements, testing) gives the following requirements (all in mm) for caliper measurement accuracy: Accuracy of calipers according DIN 862 Nominal Legnth ġ = Permitted ±deviation at arbitrary point in relation to nominal dimension.Ģ = Permitted length variation (depending on flatness and parallelism error). 00, 0, 1 and 2 and the calibration Grade K. The permissible deviations and tolerances are stated for four grades of accuracy, i.e. Table of tolerances for gauge blocks according to DIN 861, corresponds with ISO 3650 and SS 3348.ĭIN 861 specifies the most important dimensional and quality characteristics of gauge blocks with a rectangular cross-section and a nominal length ln ranging from 0,5 to 1000 mm. ![]()
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