The special lip-edge on this ruler works like a T-square against the edge of an Olfa mat and it offers perpendicular lines and angled bias lines.
Basic Rotary Cutting Rulers
O'Lipfa 16318 Ruler with Lip Edge, 3 x 18-Inch , White
Dritz O'Lipfa Lip Edge Ruler : : Beauty & Personal Care
O'Lipfa 66636 Ruler with Lip Edge, 4 x 36-Inch
O'Lipfa 66636 Ruler with Lip Edge, 4 x 36-Inch
Lip Edge Ruler - 5 x 24, Hobby Lobby
Dritz O'Lipfa Lip Edge Ruler : : Beauty & Personal Care
O'Lipfa 11111 Ruler with Lip Edge, 5 x 24-Inch
O'Lipfa 11111 Ruler with Lip Edge, 5 x 24-Inch
Lip Edge Ruler is a great slip free cutting tool for quilters, sewers and crafters to use. Some of the features are precise markings, standard size
Lip Edge Ruler - 5 x 24
.com: O'Lipfa 11518 Ruler with Lip Edge, 5 x 18-Inch