The Rockwell hardness tester to measure the hardness of metal measures resistance to penetration like the Brinell test, but in the Rockwell case, the depth of the impression is measured rather than the diametric area. With the Rockwell tester, the hardness is indicated directly on the scale attached to the machine.
(Redirected from Apache Nation) The Apache (/ÉËpÃ¦tÊiË/; French: [a.paÊ]) are culturally related Native American tribes from the Southwestern United States, and have traditionally lived in Eastern Arizona, Northern Mexico (Sonora and Chihuahua), New Mexico, West Texas, and Southern Colorado.
by Dennis | Jul 9, 2011 | Arizona, Native American, New Mexico, Texas | 0 comments. Apache Indians (probably from Ã¡pachu, âenemy,â the ZuÃ±i name for the Navaho, who were designated âApaches de Nabajuâ by the early Spaniards in New Mexico). A number of tribes forming the most southerly group of the Athapascan family.