ISO 2194:1991

Table 1 (millimetre sizes) gives principal sizes (R 10) from 1 to 125, and supplementary sizes: R 20 and R 40 from 1 to 125. Table 2 (micrometre sizes) gives principal sizes (R 10) from 5 to 800, and supplementary sizes: R 20 from 20 to 900, R 40 from 32 to 950. This second edition cancels and replaces the first edition (1972).