THE REFERENCE SHELF
Dimensions
Nominal 80mm and measured paper width are not the same field
Read whether a dimension describes the paper itself, the wound roll or a nominal product family. Preserve tolerances rather than rounding everything to a single label.
Outside diameter is a fit limit, not a length calculator
Check the full roll’s outside diameter against the exact machine requirement. The outside circle does not reveal the amount of paper by itself.
Core ID, core OD and an unspecified core are three different statements
Ask whether “core” means inner diameter, outer diameter or an accessory designation. Do not silently exchange those meanings.
Send a supplier the fields that are still missing
A useful specification request names the exact roll and printer, then asks for the unresolved dimensions rather than a generic “will this fit?”.