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All measurements ultimately refer to the : meter (length), kilogram (mass), second (time), ampere (current), kelvin (temp), mole (amount), candela (luminous intensity). In dimensional metrology, the meter is defined by the speed of light (fixed in 1983): 1 meter = distance light travels in 1/299,792,458 second .
Industrial CT scanning produces internal and external geometry simultaneously. Allows measurement of hidden features (e.g., internal threads, porosity). Requires specialized voxel-based analysis software.
Probes: Touch-trigger, scanning (analog), and non-contact (laser, structured light).
In the past, parts were often custom-fitted to one another. Today, global supply chains rely on . A component made in Germany must fit perfectly into an assembly in India. Without standardized metrology, this global coordination would collapse. Metrology and Measurement | Mechanical Engineering | A&M