IRWIN Tools Framing Square， Hi-Contrast Aluminum， 16-Inch by 24-Inch (1794447)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>This professional tool has permanent deep stampings are durable. The aluminum body is rust-proof and lightweight.</li><li>The square has multiple scales: 1/8-， 1/10-， 1/12-， and 1/16-inch.</li><li>Features rafter tables， brace and octagon scales and Essex board measure. Can be used as a protractor， saw guide， and ruler.</li><li>Yellow markings on blue background are easiest to read.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41ndMMp1FqL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51qfBM-cSIL.jpg" noproxy>