The document discusses measurement techniques like contact and non-contact methods and coordinate measuring machines used to ensure symmetry in manufacturing. Symmetry is important for automotive, aerospace, and electronics industries as well as tools and machinery. Maintaining symmetry is critical to ensure product performance and safety as well as serve as a quality control measure to detect defects according to specifications.

1. Measuring Techniques
The commonly used techniques are:
• Contact and non-contact method
• Coordinate measuring machines(CMM)

2. Applications
Application of symmetry plays a major role in:
• Automotive and aerospace Industries
• Consumer Electronics
• Precision tools and machinery

3. Conclusion
In summary, maintaining symmetry is critical in manufacturing and assembly to ensure:
• Product Performance: Symmetry is crucial for ensuring that a product performs as
intended
• Safety: Symmetry is also important for ensuring the safety of a product. A lack of
symmetry can cause a product to be unstable or unbalanced, leading to accidents or
injuries
• Quality Control: Symmetry can also serve as a quality control measure. By ensuring that
parts are symmetric, manufacturers can detect defects or deviations from specifications,
which can help them identify and correct problems early in the production process.