This item is a 12-inch combination square set used for measuring and marking in woodworking, metalworking, and construction.
Includes a stainless steel ruler with metric and imperial graduations.
Features an adjustable protractor head for angle measurement, a center head, and a level vial.
The head is typically made of cast iron or high-quality steel for durability.
Allows for marking 90-degree and 45-degree angles.