Standards
- International (ISO)
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- ISO 6508-1: Metallic materials -- Rockwell hardness test -- Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T)
- ISO 2039-2: Plastics -- Determination of hardness -- Part 2: Rockwell hardness
- US standard (ASTM International)
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- ASTM E18 : Standard methods for Rockwell hardness and Rockwell superficial hardness of metallic materials
Read more about this topic: Rockwell Scale
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“Measured by any standard known to science—by horse-power, calories, volts, mass in any shape,—the tension and vibration and volume and so-called progression of society were full a thousand times greater in 1900 than in 1800;Mthe force had doubled ten times over, and the speed, when measured by electrical standards as in telegraphy, approached infinity, and had annihilated both space and time. No law of material movement applied to it.”
—Henry Brooks Adams (1838–1918)
“That’s the great danger of sectarian opinions, they always accept the formulas of past events as useful for the measurement of future events and they never are, if you have high standards of accuracy.”
—John Dos Passos (1896–1970)
“Barbarism is the absence of standards to which appeal can be made.”
—José Ortega Y Gasset (1883–1955)