To use this measuring tool, simply align it with the edge of the material being measured, then slide your fingers along the raised markings to determine lengths accurately. This method ensures that users can confidently take measurements and cut materials with precision, enabling greater independence in their activities. Features -Color:Green -Material:PP -Size:21.30X2.60X0.20 cm/8.37X1.02X0.08in -Interactive learning resource: it plays a vital role in supporting endeavors for blind students, ensuring that they can measure and learn confidently -Precision at your : the ruler’s highprecision tactile markings allow for accurate measurements, meeting the expectations of blinds users effectively - durability: manufactured with robust materials, this ruler withstands daily wear and tear, providing a reliable measuring solution for any environment -Simple to master: its intuitive layout makes it easy for blind individuals to learn to use this ruler efficiently, fostering in their tasks Package list: 1 x blind ruler