-in-one sewing measuring tool: T-shaped gauge, gauge, seam allowance, buttonhole gasket and compass. Using 4 colors of thermal erasing pens, the ink may disappear when the temperature reaches 60 degrees Celsius or above or when cleaning, This is very suitable for marking on fabrics. Compass: Fix of the "Sewing Measuring Tool" button, and then place the pen on the hole of the cursor to draw an arc. And measure the diameter of the seam allowance meter: the black area of the sewing measuring tool Mark the standard width according to the seam width Buttonhole gasket: The measured distance depends on the position and position of the cursor on the sewing ruler between the two buttons. Folding ruler: Fold the fabric and set the hemming ruler to the desired length, fix and continue. Name: T-shaped sliding gauge sewing measurement Colour:Yellow+blue+red+black+ Material:plastic Size: 17.5x6.5cm Package Contents: 1 x sliding sewing measuring tool 4 x hot erase pen Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.