Specification: Material: stainless steel + zinc alloy Size: Total 30 cm (12 inches), double-sided scale Notice: Please allow slight dimension difference due to manual measurement. Please consider the actual sizes in the listing as the pictures are generally enlarged to show detail. Due to different producing batches, product details might be a little different. If you minding the difference, please buy it carefully. Due to the light and screen difference, the item's color may be slightly different from the pictures. Thanks for your understanding.Parts List: Package contains: 1 x combination square ruler High quality stainless steel forgings, ruler is made of high quality stainless steel. The corner frame is made of zinc alloy, will not rust, will not deform, the thickened thickness is 2 mm, it is strong and durable, and can be used for a long time Both sides of the 12-inch square ruler are available. Using laser technology for high-precision manufacturing, double-sided rulers with millimeter and centimeter scales. The embossed graduation design is easy to read and durable Composed of 300 mm steel ruler and adjustable square head for precise measurement. It helps you to use a ruler and head to make a truly accurate angle and straight line The tool can be used as a square, depth gauge, marking pen and level gauge. This is a practical design designed to mark straight lines, draw parallel lines, layout, calibrate, measure the depth of the cutter head of the milling machine, and set the table saw blade Movable multi-directional measurement Horizontal measurement 90A angle measurement 45A angle measurement