Your pattern tells you to work until the piece measures 3 long Do you find yourself pulling out that measuring tape every row praying that it is finally long enough? Behold! The Work Until Measuring Tape! * Replace any regular stitch marker on your needles * Set the slider to the measurement you need * Knit until you reach your measurement! * The rulers already on your needles Measures up to 12.5 / 32cm Fits up to a US 10.5 (6.5mm)