For joiners and carpenters who demand precision and readability every day, this Stanley square (ref. 1-45-686) combines a 300 mm stainless steel blade with a contoured extruded aluminum heel. The double-sided photo-etched millimeter graduation ensures clear reading even in job site conditions, while the bevelled heel allows for marking 90° and 45° angles with a single tool. The Class 2 rating certifies a level of precision suitable for serious metrology work. Simple and robust, it fits naturally into a demanding tool kit—for reliable markings, time after time.