Durable Material: The combination square ruler is made of high quality stainless steel material.The Angle holder is made of Zinc alloy, which will never rust or corrode, not easy to deform, sturdy and durable.  High Precision: The carpenter's square is also equipped with a spirit level. The scale is engraved by laser technology for extremely high precision. Metric and inch scales in centimeters and millimeters meet different requirements.  Ergonomic Handle: The ergonomic design of handle makes you take measurements comfortably and easily.  Adjustable Combination Square: This product consists of a 300 mm steel ruler and an adjustable square head.Suitable for 45/90 degree angles marking, multi-dimensional measurement, marking straight lines, drawing parallel lines.  Wide Application: It is suitable for multidimensional measurement, marking out, laying out etc., Manufacturer: Eidoct