The Blue Box 30cm Shatterproof Ruler  (Blue)

The Blue Box 30cm Shatterproof Rulers – Blue (Pack of 10) are durable, safe and accurate measuring tools ideal for everyday use in schools, offices and homes. Made from tough shatterproof plastic, each ruler is designed to withstand frequent use without breaking, offering added safety for children and busy classrooms. With clear, easy-to-read markings in centimetres and millimetres, these 30cm rulers provide precise measurements for maths, geometry, technical drawing and craft projects. The smooth straight edge is perfect for drawing neat lines, diagrams and charts, while the bold blue colour makes each ruler easy to spot in pencil cases, trays and desks. Supplied as a convenient pack of 10, they are perfect for class sets, group activities, exam rooms and shared office spaces. Ideal for students, teachers, tutors and professionals who need reliable, long‑lasting rulers that won’t splinter or shatter if dropped.