Protractors - A protractor is used to measure the angle two faces of a component. The instrument consists of two arms, which can be set along the faces of components. In ordinary protractor the base of the instrument from one arm as shown in the figure below. In the inch system, the unit of angle measurement is degree, minute and second. The ordinary protractor is graduated in degrees and measures angle only in degrees. Full circle = 360 degree (360") I degree = 60 minutes (1° = 60), I minute = 60 seconds (I' = 60"). • Adjustable protractors are precision tools. They are used in workshops everywhere. Angles between 0° - 180° can be measured. Accuracy = 1°. They have a scale with graduation (1).and an adjustable indicator (2).
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.
I need answers with clear hand writing or using Microsoft word . ASAP
measurements , describe how to read the values given on the measurement tools and to write about measurement tools
note: i want a lot of information
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