Length scale with marking slots for drawing a pencil
Depth scale for depth markings
Additional holes at increments of 2.5 tenth of a millimetre allow extremely accurate markings
Incra Precision Marking Rules
With these marking rules you are guaranteed accurate marking. As well as the conventional scale, these rules have marking holes or slots which allow exact guidance of a sharp pencil or a 0.5 mm mechanical pencil for precise markings. The thin stainless steel rules have a matt ant-reflective surface for high reading accuracy.