B43L7/00	Straightedges (guides for rulers other than for T-squares B43L 13/04; curve rulers or templets B43L 13/20; straightedges characterised by the provision of indicia or the like for measuring, e.g. rulers or tapes with measuring scales or marks for direct reading, G01B)
	Note(s) In this group, the following term is used with the meaning indicated:[5] "straightedge" means an instrument or its edge serving the purpose of acting as a guide for the drawing of a straight line