Your Ultimate Tool for cutting half-square & quarter-square Triangle units, plus basic squares up to 6 ½”! Eliminate the tedious math associated with traditional half and quarter square triangle units. Create complex looking blocks with ease thanks to the Unique Non-Slip Coating for accurate cutting!

FREE! Download a Ruler Primer project for the 3N1 Square And Triangle Combo Ruler! Includes instructions, block files, and a colouring page!