What is calibration, GD and T symbol in engineering drawing, which type of inspection instruments used earlier like vernier, Micrometer,bore gauge, cmm etc

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Accepted Answer

Calibration is the process of comparing a measurement device to a known standard to ensure accuracy. GD&T is a symbolic language used to communicate design intent on engineering drawings.

Calibration ensures that measurement devices are accurate and reliable.
GD&T symbols are used to specify the geometric requirements of a part on an engineering drawing.
Examples of inspection instruments used earlier include vernier calipers, micrometers, bore gauges, and coordinate measuring machines (CMM).

What is calibration, GD and T symbol in engineering drawing, which type of inspection instruments used earlier like vernier, Micrometer,bore gauge, cmm etc

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