Incra 10″ Metric/Decimal Rule
Incra’s unique rules are equipped with a series of narrow slots and tiny holes that locate your .5mm mechanical pencil lead or the point of your scratch awl at exactly the measurement you choose. Your awl point can’t skate around, and your pencil line will be straight and perpendicular to the rule. Since you can pin one end with the point of an awl, these rules make excellent beam compasses too, for marking curves of any radius you need.
