INCRA T-Rules make it very easy to draw exact lines in either direction. Select the proper slot or hole, insert a .5mm mechanical pencil, and mark the measurement with dead-on accuracy. This rule offers Incra's patented marking holes at every full, 1/4, 1/2 and 3/4mm from 0 to 150mm. They also offer 0 to 50mm height marking slots on the end in millimeters.
