Define what is measured, how it is measured and how results are judged before discussing allowable variation.
Which Items Need Agreement?
List dimensions, creases, cuts, registration, colour, bonding and assembly requirements according to the application.
Can One Value Be Used for Everything?
Materials, processes, dimensions and use conditions may require different criteria. No unverified universal tolerance is provided here.
How Should Colour Be Compared?
Agree on physical colour references, approved samples or another basis, together with viewing conditions. Screen displays are only a communication reference.
How Should Differences Be Handled?
Keep batch details, measurement positions, photos and samples. Use agreed sampling and reinspection methods rather than drawing conclusions from a single photo.