Primary product documentation and appropriately scoped public resources help readers check a guide’s claims.
Product documentation
Use the manual, model identifier, dimensions, operating limits, assembly instructions, care instructions, and warranty terms for the exact chair being discussed.
Public references
Recall databases can help locate product warnings. Accessibility guidance addresses its stated built-environment scope and should not be presented as a clinical chair-fitting standard.
Firsthand evidence
Identify the task, conditions, observation period, and limits behind any reported measurements or use.