Material: aluminum alloy Our Pocket ruler is made by top Aluminum alloy quality and made by prcess. THE BE-ST RULER FOR WOODWORKING AND T TRACK TASKS - Both inch and Metric. QUALITY CONTROL: These items have been engineered under strict quality guidelines and superior craftsmanship, ensuring highly accurate and precise measurement markings for consistent and reliable results FUNCTION: Provides a highly accurate measuring reference, along with a quick and easy set-up to your accessories, Manufacturer: SOYWIM