(d) Based on the situation below, give one type of error faced by Ali's and give the suggestion how Ali's can make the reading become accurate and precise. Ali uses a vernier caliper to measure the diameter of 3 tubes. Then, the readings are compared to the actual values of the tubes as shown in Table 1: Tubes number No tube Tube 1 Tube 2 Reading measurement Actual value 0.05 mm 5.05 mm 10.05 mm 5 mm 10 mm Tube 3 12.05 mm 12 mm Table 1
Theory and Design for Mechanical Measurements
Measurement is a term that refers to analyzing a manufactured component regarding the degree of accuracy for dimensions, tolerances, geometric profile, roundness, flatness, smoothness, etc. Measurement always involves comparing the manufactured component or the prototype with a standard specimen whose dimensions and other parameters are assumed to be perfect and do not undergo changes with respect to time.Precisely in mechanical engineering the branch that deals with the application of scientific principles for measurements is known as metrology. The domain of metrology in general deals with various measurements like mechanical, chemical, thermodynamic, physical, and biological measurements. In mechanical engineering, the measurements are limited to mechanical specific such as length, mass, surface profile, flatness, roundness, viscosity, heat transfer, etc.
Basic principles of engineering metrology
Metrology is described as the science of measurement, precision, and accuracy. In other words, it is a method of measurement based on units and predefined standards.
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