Johnson Level Architect's Straight Edge Ruler is a precision tool designed specifically for architects and professionals who require accurate measurements. This aluminum extruded triangular ruler features an anodized finish for durability and long-lasting use. It includes laser-etched graduations for clear, easy-to-read markings. The ruler measures 12 inches in length and a U.S. standard scale divided into various increments such as 3, 1-1/2, 1, 3/4, 3/16, 3/32, 1/2, 1/4, and 1/8 inch per foot, with divisions down to 1/16th of an inch. Its width is 7/8 inch, making it a compact yet highly functional measuring tool. This straight edge ruler is for detailed architectural work and precise measurements. Model Number: 1817-0000