Digital Protractor Promises More Accuracy Than a Plastic Half Circle

To no one's surprise, those clear plastic protractors we were all taught to use in grade school are far from being the most accurate way to measure an angle. They're perfect for a grade five homework assignment, but in the real world you'll probably want to opt for this digital alternative that's precise to plus or… »9/18/12 5:20pm9/18/12 5:20pm