General tolerancesTamre, MartGeometrical product specifications : course for technical universities2001 / p. 15.1-15.11 : ill ISO system of limits and fitsMärtson, Ivar; Tamre, MartGeometrical product specifications : course for technical universities2001 / p. 6.1-6.16 : ill Tolerances of angles and conesTamre, MartGeometrical product specifications : course for technical universities2001 / p. 14.1-14.9 : ill