This document discusses measurement and mechanical measurements. It defines measurement as comparing an unknown magnitude to a predetermined standard. Measurement provides quantitative descriptions and must use accurate standards and reliable methods. Mechanical measurements are important for research, design, and development. They are classified as mechanics measurements or power measurements. Mechanics measurements use empirical, rational, or experimental design methods and include measurements of length, mass, and time. Power measurements monitor quantities like pressure, temperature, and flow rates in systems like steam plants. Measurement systems generally work by converting the measured quantity to an analogous signal, processing the signal, and presenting the results. Calibration is important to prove a system's reliability by applying known inputs. Transducers are key components that convert one energy