This 12-inch combination sliding square is a vintage and unique addition to your toolbox. The item is crafted from high-quality stainless steel, ensuring durability and long-lasting use in metalworking and manufacturing. The square features a 12-inch base length and blade length, with inch graduation style, making it suitable for precise measurements. The item type is a combination square, perfect for use in metalworking inspection and measurement. This item is shipped fast and is ready to be added to your collection. Some rust and unbranded from what I can tell. Not sure what the compass piece is but it comes with a pencil like tool also.