Incra Mechanical Pencil

For all INCRA Precision Rules & layouts. As you see in the photo; the micro-fine guide holes on INCRA rules are designed for a perfect mark with the 0.5mm lead size in your mechanical pencil. This design elevates the inexpensive .5mm pencil into a precision marking and layout instrument. All of the marking holes in INCRA rules require a 0.5mm lead size. Some pencils on the market have .7mm lead; but these will not work in Incra's precision marking holes. The eraser removes any errant marks quickly without residue or abrasion.