Portable Hardness Tester is a kind of high-tech grade portable hardness testing instrument,adopting low-power design idea,long life span chargeable NI-MH battery and intelligent USB interface, Which is widely used in various metal material;it equips with built-in mini-printer, which can easily print out testing result on-site; moreover, Large colorful LCD digital screen with 128×64 dot matrix enables it to display not only figure, but also character. Customers who are in need of directly printing data out on-site, and enjoying a digital as well as high-tech testing feel, this is the best choice.