Which information is NOT required to be marked on equipment used in measurement processes?

In weight measurement and verification processes, certain information must be marked on equipment to ensure proper identification and traceability. While the device model number, manufacturer's name, and calibration date are all essential pieces of information, the certificate of conformance number is not typically required to be marked directly on the equipment itself.

The model number helps identify the specifications and capabilities of the device, while the manufacturer's name provides traceability and accountability for the equipment quality and standards. The calibration date indicates when the equipment was last checked for accuracy, which is crucial for reliability in measurements.

However, the certificate of conformance number serves as documentation that certifies the equipment meets specific standards but does not need to be physically marked on the equipment. This documentation is usually kept in records or files rather than on the device, making it unnecessary for marking purposes on measurement equipment.