Starrett C434-12-16R 12-Inch Combination Set with Forged and Hardened Steel Square and Center Head<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>A choice of stable cast iron protractor - reversible is nicely finished with a black durable finish</li><li>Graduation: No. 16R - quick reading 1/32"， 1/64"， aircraft quick reading 1/50"， 1/100"</li><li>With reversible lock bolts， scriber， spirit level in square， center heads and protractor head</li><li>Direct reading double 180 degree protractor scale</li><li>The square， center heads are forged hardened steel and cast iron reversible protractor with satin chrome blade， smooth black finish</li><li>16R Grad: Quick Reading 32nds， 64ths， Aircraft Quick Reading 50ths， 100ths</li><li>Cast Iron Protractor Head</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41h37FCK6SL.jpg" noproxy>