Quality checks are used as part of quality control and quality assurance. Some quality checks are easy to do, but other quality checks are more difficult. For example:
Easy Quality checks
size
weight
construction
Difficult quality checks
attractiveness
comfortable
fashionable
Quality Control
Quality control is a series of checks which are carried out on a product as it is made. (quality control point are shown on a flow chart using a diamond shape.)
Quality Assurance
Quality Assurance checks the systems which make the products, before, during and after manufacture. It ensures that consistency is achieved and that it meets the required standard.