Starrett 434-12-4R 12-Inch Combination Set with Forged and Hardened Steel Square and Center Heads<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Cast Iron Protractor Heads</li><li>Reversible</li><li>4R Grad: 8ths， 16ths， Quick Reading 32nds， 64ths with regular finish</li><li>A choice of stable cast iron protractor - reversible is nicely finished with a black durable finish</li><li>Graduation: No. 4R - 1/8"， 1/16"， quick reading 1/32"， 1/64"</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41h37FCK6SL.jpg" noproxy>