The Ruler Cutter is perfect for sewing, patchwork and papercraft. 4-1/2" x 27-1/2", the longer length enables you to cut the entire width of a standard bolt of fabric. Easy to read markings at both 1/4" & 1/8" intervals, 30, 45, and 60 degree angles are included. The rotary blade palm grip is shaped for comfort, features a patterned surface to help eliminate slipping and smoothly glides along the length of the ruler. The cutter takes a standard 45mm rotary blade.