It's expensive, time-consuming and tedious to measure tensile strength on your own, but you need it for quality control during manufacturing. And if you're not doing tensile testing in house, then you'll have to pay an outside lab hundred of dollars per test!
Qualitest has developed Tensile tensing machines that does all the work for you. Now anyone can do their own tensile tests with ease. This saves companies thousands of dollars every year by allowing them to do their own testing instead of outsourcing it to labs like we used to.