8.8 Cosmetic Inspection Standards (Visual Quality)

Cosmetic standards are subjective unless quantified. This section defines "Good" vs. "Bad" for surfaces.

8.8.1 Zoning Classifications

• Zone A (Primary): The face of the product always visible to the user (e.g., Screen, Buttons).
  • Standard: No scratches visible at arm's length (60cm). Zero dirt/contamination.
• Zone B (Secondary): Sides or back, visible during handling but not operation.
  • Standard: Max 2 minor scratches (< 2mm long) allowed per unit.
• Zone C (Non-Visible): Bottom or Internal surfaces.
  • Standard: Scratches allowed if they do not expose raw metal (corrosion risk) or affect fit.

8.8.2 Inspection Conditions

• Lighting: Cool White Fluorescent (800 – 1000 Lux).
• Time: 5 to 10 seconds per surface (scan, do not stare).
• Distance: 60 cm (approx. arm's length). Using microscopes for cosmetic inspection is prohibited as it leads to false failures.

Final Checklist