Mitutoyo HH-411 Portable Hardness Tester This unit is designed for ease of use. Just one touch of a button performs non-destructive testing, and the HH-411 is compact and portable, ideal for on-site applications. The HH-411 can perform hardness testing on very small surface areas, making the HH-411 ideal for surface hardness testing of small features such as gear teeth, structural members and similar items. Displays included... Leeb Vickers Brinell Rockwell C Rockwell B Shore Tensil Strength Promo includes FREE Ground Shipping!