Measurement & Metrology

 1. Why measurement is necessary ?                                                                                         The monitor and control a process. For purpose of quality control & inspection.

2. What is measured in engineering ?
The variable which affect, control or govern a process.
Mechanical variable -  Pressure (P), Temperature (T), Volume (V), Density (ρ), Velocity (V), acceleration (A), Torque, power, stress, strain, time, length, electrical, current, force, mass/weight.
Measurement - A technique of comparison of a variable with the standard value. 
Flow measuring devices - venturimeter, orifice meter, mouth pieces, pitot tube.


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