The OneDer Square is a unique and innovative tool designed for measuring and layout purposes in the workshop or at home. With its brand name implying a reliable and quality product, users may wonder how it works and what makes it different from other measuring tools. The OneDer Square offers a precise and efficient way to achieve accurate results in various projects, making it a valuable tool for those looking to improve their measuring and layout skills.

  Appears to have one tab that has broke off but since I don't know how this works I don't know if it's really necessary