Rockwell scale for specialized applications. There are special scales for measuring case-hardened specimens. Rockwell scale The Rockwell scale is a hardness scale based on indentation hardness of a material. The Rockwell test determines the hardness by measuring the depth of penetration of an indenter under a large load compared to the penetration made by a preload. There are different scales, denoted by a single letter, that use different loads or indenters. The result is a dimensionless number noted as HRA, HRB, HRC, etc., where the last letter is the respective Rockwell scale (see below). When testing metals, indentation hardness correlates linearly with
Neonatal Behavioral Assessment Scale supposed to assess the "infant's role in the mother-infant social relationship" from which high scores are supposed to presume "high levels of intelligence.". Therefore, the value of the test is as a research tool and a supplement test to medical testing procedures. But as a predictor of future intelligence, it is very unsatisfactory. Because of this, some wonder what the scale is really measuring. Training is necessary for effective and reliable administration of the NBAS. Neonatal Behavioral Assessment Scale The Neonatal Behavioral Assessment Scale (NBAS), also known as the Brazelton Neonatal Assessment Scale (BNAS), was developed in 1973 by Dr.