Durable construction: Made from extra-thick ABS plastic for heavy-duty use and resistance to wear and tear. Easy-to-read graduations: Moulded-in contrasting color graduations for improved readability and accuracy. Wrapping graduations: Graduations wrap around the square for greater accuracy and convenience. Large base: Provides a strong grip on materials for stability during use. Versatile tool: Can be used for various measuring; marking; and cutting applications; including as a saw guide.