Dual Scale Precise Measurement: The ruler is marked with both mm and inch scales. The millimeter scale is extremely fine and the inch scale is in line with international standards. Precise measurement data can be obtained at any time meeting diverse measurement requirements. 3 Standard Sizes: The ruler set includes rulers in 3 sizes: 6 12 and 15 inches. From the precise measurement of small objects to the preliminary estimation of large - scale projects it can be easily adapted to various scenarios. Stainless Steel Material: Made of high - quality stainless steel it is sturdy and durable not easy to deform. It can remain stable even under high - intensity use and harsh environments. Wide Application: It helps machinists create precision parts in the mechanical workshop assists students in drawing practice in the school classroom is used for daily data measurement in the office. It can play an important role in multiple fields and meet different scenario needs. Exquisite Design: With a thickness of only 1.5mm it is lightweight and portable convenient to take at any time. Each ruler has a 9mm hanging hole which is easy to store and does not take up much space. The combination of cork and stainless steel provides anti-slip function and improves grip comfort enhancing the user experience.