Calculated Industries 6020 Scale Master Classic 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"> 72 built-in scales for more versatility </span></li><li><span class="a-list-item"> Six user-set custom scales calibrate out-of-scale plans </span></li><li><span class="a-list-item"> Two built-in memories for easy area/volume and storing values </span></li><li><span class="a-list-item"> Lock switch prevents inadvertently changing mode or scale while rolling </span></li><li><span class="a-list-item"> Lock switch prevents inadvertenly changing mode or scale while rolling </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31JFPAG8MPL.jpg" noproxy>