Take some of the fiddling out of foundation paper piecing with an Add-A-Quarter ruler. Its built-in lip rests against the folded foundation to help you trim a consistent quarter-inch seam allowance as you work through your blocks.
Keep it beside your cutting mat for the repeated trimming that makes intricate piecing come together neatly. With 6-inch and 12-inch lengths, Standard and Plus styles, and colour choices available, you can choose the ruler that suits the way you like to sew.
Choose your size, style and colour from the options above.