Inspection

As the variety of items being mass-produced grew, so did the need for monitoring the quality of the parts produced by these processes.
Industries saw a need to ensure that the customer received a quality product
At 1st, inspection was the primary method of ensuring quality product or services

Refers to those activities designed to detect or find nonconformances existing in already completed products and services.
Inspection, the detection of defects, is a regulatory process.
It involves the measuring, examining, testing, or gauging of one or more characteristics of a product or service.
This result is compared with established standards to determine whether or not the product or service conforms

Inspection occurring only after the part or assembly has been completed can be costly.
If a large number of defective products has been produced and the problem has gone unnoticed, then scarp or rework costs will be high.
The same is true in a service environment.
If the service has been incorrectly provided, the customer receiving the service must spend additional time in the system having the problem corrected.

Quality Control (QC)
QC refers to the use of specifications and inspection of completed parts, subassemblies, and products to design, produce, review, sustain, and improve the quality of a product or service.

Quality control goes beyond inspection by

1. Establishing standards for the product or service, based on the customer needs, requirement, and expectations.
2. Ensuring conformance to these standards. Poor quality is evaluated to determine the reasons why the parts or services provided are incorrect.
3. Taking action if there is a lack of conformance to the standards. These actions may include sorting the product to find the defectives. In service industries, actions may include contacting the customer and correcting the situation.
4. Implementing plans to prevent future nonconformance. These plans may include design or manufacturing changes; in a service industry they may include procedural changes