JJG (Light Industry) 49-2000 "Cardboard Compression Strength Tester Verification Regulations" specifies the method of verification and technical requirements of Cardboard Compression Strength Tester. The regulations refer to ISO3035, ISO3037 and ISO7263 standards, and combine the technical requirements of JJG157. It is suitable for Cardboard Compression Strength Tester with a maximum test force of not more than 3000N, including the first verification, subsequent verification and inspection in use. The regulations cover the requirements of the tester's force value Precision, Test speed error, Appearance inspection, measurement and control system function, operation performance and Safety protection. The verification environment needs to meet specific conditions, and the verification period is usually one year.