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According to DIN ISO 2768

According to DIN ISO2768-1

General tolerances for linear measures and level squares with four tolerance classes are useful for simplifying drawings.By choosing the tolerance class precision levels common in workshops should be taken into account.

If smaller tolerances are needed or bigger ones are more economical,then these tolerances are indicated next to the nominal size.

Tabular1Limits for linear measures

Tolerance-class

Limits in mm for nominal sizes in mm

0,5to3

above

3to6

above

6to30

above

30to120

above

120to400

above

400to1000

above

1000to2000

above

2000to4000

f(fine)±0,05±0,05±0,1±0,15±0,2±0,3±0,5-

m(medium)±0,1±0,1±0,2±0,3±0,5±0,8±1,2±2 c(coarse)±0,15±0,2±0,5±0,8±1,2±2±3±4

v(very coarce

grob)

-±0,5±1±1,5±2,5±4±6±8 For nominal sizes below0,5mm the limit measures are to be indicated directly at the nominal measure.

Tabular2Limit measures for radius of curvature and chamfer height

Tolerance class

Limits in mm for nominal sizes in mm

0,5

to3

above

3to6

above

6

f(fine)

±0,2±0,5±1 m(medium)

c(coarse)

±0,4±1±2 v(very coarse)

Bei Nennmassen unter0,5mm sind die Grenzabmasse direkt am Nennmass anzugeben. Tabelle3Grenzabmasse für Winkelmasse

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