The metal ruler, with a length of a whopping 60 cm, is indispensable when cutting vinyl or flex films. The ruler doesn’t move thanks to the anti-slip edge and is incredibly sturdy when you cut the material along the edge with a knife.
The metal ruler has a special side for cutting with a thicker edge to prevent the blade from gripping into the aluminum of the ruler. SU it is better to use the side with no CM indication for cutting.