|The Affri Portable Metal Hardness Tester is a portable Rockwell Hardness Tester with direct digital read-out. It is designed for hardness tests on particularly cumbersome items like materials in the warehouse, and pieces which cannot be tested on a bench Hardness Tester. This includes, very thin metal such as shearing bands and surfaces in hardened metal such as superficial hardness. Starting from a thickness of 0.08mm, it does not spoil the surface because it produces micro-indentations. It works on the Rockwell principle, with preload and load. It has automatic zeroing and memory of the last result. The Affri Metal Hardness Tester is light and compact, and it incorporates, a microprocessor, with a LCD display indicating the hardness value which is fixed and memorized on the display until the next test. It allows for tests to be done even where there is little light.