Drawing Rockwell Hardness Testing Machine Diagram. The rockwell scale is a hardness scale based on indentation hardness of a material. The vickers hardness test was developed in 1921 by robert l. Portable dynamic hardness testing machines model.
Smith and george e. High rockwell hardness numbers represent hard materials and low numbers soft materials.
490 3 882 6 1373 n 50 90 140 kgf.
Mitutoyo america corporation offers innovative precision measurement solutions with the highest level of quality precision and expertise. Smith and george e. In all hardness tests a define force is mechanically applied on the piece varies in size and shape for different tests. Rockwell hardness tester presents direct reading of hardness number on a dial provided with the m c.
