Smart Cutter / ruller papers cutter

Straight cut is a product that can easy cut paper straig.Although It looks like a ruler, but the ruler is just was an auxiliary part to help cut straight, Its main function is to cut paper or other things.The ruler can be pressed by hand , so that the product won’t move; the knife be exposed out by pressing. And this two parts linked by slide rail.There are some scale above the ruler,you can cut paper by scale. When the blade slid the end,you can keep the blade does not move,and slide the ruler part, and it can continue to cut open the paper .