A tolerance needs a stated value or referenced rule, a measurement basis and a defined response to exceptions.
Identify what is being checked
Name the characteristic precisely: delivered board width, profile geometry, installed alignment or another defined property. Do not use one general tolerance statement to cover both manufactured material and field workmanship. Obtain applicable product tolerances and coordinate project installation criteria through the responsible reviewers. If a requirement has not been selected, mark it unresolved. Adding an arbitrary number may make the brief look complete while creating an impractical or conflicting acceptance rule that no supplier or installer has evaluated.
Specify a repeatable observation
Record the measurement stage, relevant material condition, instrument, location and sampling plan established for the project. A value measured before conditioning may not be directly comparable with a value measured after installation. Include the drawing or specification revision being checked and use consistent units. Where appearance is evaluated against a sample, identify the sample and viewing conditions instead of pretending that a visual comparison is a dimensional measurement. The objective is an observation that another reviewer can interpret, with enough context to understand how the result was obtained.
Document exceptions without hiding them
Create an exception record when a result differs from the stated requirement. Identify the affected lot or location, the observed value, supporting photographs where useful and the requested disposition. Keep rework, replacement, acceptance and further review as decisions by the authorized party. Do not automatically convert a recorded measurement into a pass merely because the form has been completed. When the issue is resolved, retain the original observation and the final response together. This allows the project to distinguish an inspection result from a later decision about what to do with it.
Evidence & scope
General wood science context; chapters on lumber, moisture, fastening and finishing. Not a project specification or product approval.
Background on moisture conditioning and dimensional response. Historical edition; use current product instructions for project requirements.
Original planning guidance. References support their stated technical scope; examples and workflows do not establish product approval.