The only Isosceles triangular ruler with a raised grip to aid in placement of the ruler firmly on the page/paper. Used to develop fine motor control and pressure to firmly support a ruler or guiding device. Ideal for practising using a ruler, create grids, underline and draw. Especiallly beneficial for those pupils with hypermobility in fingers and joints that makes the traditional ruler difficult to grip/hold firmly.Ideal for pupils age 3+. Size of triangle ruler 15cm.