This 30cm ruler model is a simple yet essential tool for any 3D printing project. Featuring clear, precise markings and a clean design, it is ideal for measuring small Parts or verifying print accuracy. Its golden-yellow color adds a stylish touch while ensuring high visibility. Perfect for desktop use, this ruler is easy to print and highly functional—making it excellent for makers, educators, and hobbyists alike. Print it in PLA or PETG to achieve durability and precision. It is a must-have addition to your workshop toolkit.