Calibration's the validation of specific measurement techniques and equipment. At the simplest level, calibration's a comparison between measurements-one of known magnitude or correctness made or set with one device and another measurement made in as similar a way as possible with a second device. The device with the known or assigned correctness's called the standard. The second device's the unit under test (UUT), test instrument (TI) or any of several other names for the device being calibrate… (More on Calibration)