MATERIAL - This 30cm ruler is made of plastic, sturdy and durable, not easy to deform or damage, can be used for a long time DUAL SCALE DISPLAY - Our 30cm clear plastic rulers adopts a dual scale design, which includes centimeter and inch scales respectively, so that you can more flexibly switch between different scales for measurement in daily life EASY TO READ - The 12 inch plastic ruler with inches and metric features transparent colors, black scale can clearly display the measurement numbers, which is very convenient for your daily measurement and marking EXTENSIVE USE - The measuring 30cm ruler tool is the better choice for many offices, artists, architects, and households. It can be used to draw blueprints, measure items, draw, and so on PACKAGE CONTENT - You will receive 96 pcs clear ruler, each measuring 30.7cm/12 inch in length, 3cm/1.2 inch in width, large capacity meets your daily measurement needs, Manufacturer: SOUJAP