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.
Apache County is a county equivalent area found in Arizona, USA. The county government of Apache is found in the county seat of Saint Johns. With a total 29,055.62 sq. km of land and water area, Apache County, Arizona is the 22nd largest county equivalent area in the United States. Home to 71,828 people, Apache County has a total 32609 households earning 31476 on average per year. Apache County, Arizona offers the following attractions to visitors: Canyon de Chelly NM Chinle, Hubbell Trading Post NHS, Petrified Forest NP