Omnigrid Quarter Inch Seam Marking Ruler Trio

The Omnigrid Quarter Inch Seam Marking Ruler Trio comes in three convenient lengths: 4", 6", and 12". Their center lines are exactly 1/4" from both edges of the rulers, providing an excellent reference line for marking 1/4" sewing lines, adding and checking seam allowances and marking 1/4" quilting lines. 

Easy to use tool is great for making HST's (Half Square Triangle Units) and hourglass units. This is the tool that I personally use for marking lines on my HST's.

• Mark 1/4-inch sewing lines on patchwork pieces with this nifty set of tools
• It is a quick and easy method for half-square triangles and hourglass units
• Features an acrylic construction with easy to follow black and yellow markings
• Instructions for two patchwork blocks included
• Pairs great with our Frixion Pens!

Do not use with rotary cutters, knives or other cutting instruments; rulers are designed for marking use only.