Calculated Industries 4050 Construction Master 5 Construction Calculator<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Linear， area and volume solutions: convert dimensions， including metric </span></li><li><span class="a-list-item"> Complete rafter， roof and framing solutions， hip/valley， jacks and rake walls </span></li><li><span class="a-list-item"> Stair solutions are nearly automatic; risers， treads， stringer， incline </span></li><li><span class="a-list-item"> Built-in right-angle solutions; automatic square-ups </span></li><li><span class="a-list-item"> Circular and arc calculations; areas， diameters， circumference </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/5180R5sq1ZL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41W7va4DRHL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51YG7KmCumL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/81l1ovD%2B3MS.png" noproxy>