The JJG (Light Industry) 60-2000 Schopper paper folding meter is suitable for the verification and calibrating of Schopper paper folding meters, covering from first verification to inspection in use. The procedure refers to the ISO 5626:1978 standard to ensure that the instrument meets specific structural parameters and technical requirements. The folding meter is used to determine the folding resistance of paper and has key components such as folding head, tension mechanism and Control system. Measurement performance requirements such as folding error, tension accuracy and folding speed error of the instrument are specified in the regulations, and the methods of verification and technical conditions are described in detail, including Appearance inspection, clamping mechanism inspection, tension and folding speed measurement.