C2- Read friction factor values off the Moody diagram (show the way you work it out on the graph). 1-relative roughness = 0.04 and Re = 200000 2- relative roughness=0.0025 Re = 1000 3. Relative roughness = 0.004 Re = 200000 4. Relative roughness = 0.004 Re = 100000

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Metrology of surface finish

In general terms, the application of scientific principles in the study of measurements is known as metrology. When speaking about measurement, it could be of time, length, microstructures, grain structures, internal crystal discontinuities, surface roughness, measurements of angles, height, width, and so on. While coming to the domain of mechanical engineering, metrology is considered the science of measurements of surface finish, length, surface texture, and angles.