

For all INCRA Precision Rules & layout tools.As you see in the photo, the micro-fine guide holes on INCRA rules are designed for a perfect mark with a 0.5mm lead size in your mechanical pencil. This design elevates the simple and inexpensive 0.5mm pencil into a precision marking and layout instrument!Note that some pencils on the market have 0.7mm lead - these will not work in Incra's precision marking holes. All of the marking holes in INCRA rules require a 0.5mm lead size. The Incra Precision Pencil has a 0.5mm lead, perfectly matching the Incra series of measuring marking rules.The mechanical pencil also features an additional eraser, to remove any errant marks quickly without residue or abrasion.