This standard specifies sizes of blanks and pre-printed drawing sheets for use with all technical drawings in any field of engineering. It also specifies the layout of technical drawings by fixing rules with regard to: a) position and dimensions of title block; b) borders and frame; c) centring marks; d) orientation marks; e) metric reference graduation; f) grid reference system; g) trimming marks. This standard applies to original drawings, but rules of Section One apply also to copies therefrom.