The Hoteche 3-in-1 Combination Square Ruler is a versatile and precise tool designed for various measuring tasks. Measuring 12 inches (300 mm), this tool features a stainless steel blade and a zinc alloy handle. Its 3-in-1 functionality allows it to be used as a ruler, protractor, and level, with a built-in spirit level for accurate leveling. This combination square is ideal for ensuring the integrity of 90° and 45° angles, measuring the center of circular objects, finding depth, and simple distance measurements. It is a valuable tool for carpenters, metalworkers, and DIY enthusiasts, providing precise measurements and versatility in one compact tool.