JJG (Light Industry) 70-2000 "Buddha format paper wear resistance tester (trial) verification regulations" specify the verification requirements of Buddha format paper wear resistance tester, including first verification, follow-up verification and verification in use. The instrument is used to evaluate the abrasion resistance of paper and Cardboard, using the friction test method of linear reciprocating motion and circular motion. The regulations specify the technical requirements of spring tension error, linear reciprocating speed and circumferential speed in detail, and propose the verification environment and specific conditions of the instrument. Verification includes Appearance inspection, spring tension, movement speed and Rotation speed measurement to ensure the measurement accuracy of the instrument. A verification certificate will be issued for qualified equipment, and a notice will be issued for unqualified equipment. The verification period is generally one year.