Discover how quickly and accurately log cabin blocks can be sewn by first cutting to the exact length. These clear acrylic rulers designed by Marti Michell make it easy to cut strips for Log Cabin Blocks. Two sizes on ruler which can be used separately or for making off-center log cabin blocks. Ruler is for 1 and 2 inch finished strips. Good instructions with diagrams are included. A book by Marti Michell is available for use with her rulers "Log Cabin ABC's".