Specifies additional machine tool symbols to those in BS 3641-3:1973. Contains index which also relates to BS 3641:Parts 1, 2 and 3.Cross References:BS 3641:Part 1BS 3641:Part 2BS 3641:Part 3ISO/DIS 7000IEC 417Incorporates the following:AMD 3408 published 28 November 1980