O LIPFA-Ruler With Lip Edge features a special lip edge that works like a T-square against the edge of a cutting mat and it even offers perpendicular lines and angled bias lines. Ruler measures: 4 x 36.
Slip-free measuring and cutting. Black markings on clear acrylic. All rulers are heavy guage acrylic (.125in thick). Note: It does not have an accurate 90 degree measurement and should not be used as such. The Omnigrid Omni-Edge rulers are 100% accurate.