Chewing tobacco packing machine certification: Chartered Engineer must verify and declare each machine's maximum packing capacity accurately. A Chartered Engineer must physically inspect and certify each packing machine's technical details and declare the Maximum Rated Speed, calculated as capacity per cup or funnel multiplied by the number of cups or funnels, confirm machines cannot exceed the declared speed, disclose modifications affecting capacity, and attest that no facts affecting duty liability under the capacity determination rules have been concealed.