Cross References:BS 3643-1BS 3643-2BS 4235-1BS 4235-2BS 4827BS 8887BS EN 22768-1BS EN 22768-2BS EN ISO 216BS EN ISO 5456-1BS ISO 261BS ISO 262BS ISO 965-1BS ISO 16016 ISO/TR 14638PD 68888All current amendments available at time of purchase are included with the purchase of this document.