'Plan' dimensions for 'inside bolt circle' and 'full face' gaskets or pipe flanges in accordance with BS 10 and BS 2035, and 'full face' gaskets for flanges to BS 1770. The tables giving dimensions bear the same designation as the flange tables in the appropriate pipe flange standard. Marking of gaskets for purchasing and identification.Cross References:BS 10BS 350BS 1211BS 1560BS 1575BS 1576BS 1770BS 2035BS 2856BS 3293BS 3381ISO/R 64ISO/R 65