[Scope of Application] Used for testing the smoothness of metal, injection molded, and nylon zippers. [Compliant with standards] QB/T 2171, QB/T 2172, QB/T 2173, etc. [Technical parameters] 1. Testing method: According to the internationally preferred principle of constant rate of elongation (CRE), measure the force value (i.e. the smoothness of the zipper) when the zipper is pulled to the designated position 2. Force measurement system: using resistance strain force sensors 3. Force measurement range: 0-100N 4. Force measurement accuracy: ≤ ± 0.2% F · S 5. Sampling length: 50-500mm, can be set arbitrarily 6. Stretching speed: 100-1500mm/min digital setting 7. Display output: Chinese LCD screen, data can be queried 9. Data processing capacity: ≤ 1000 trials 10. Power supply: Ac220V ± 10% 50Hz 11. External dimensions: 520 × 400 × 1600mm 12. Weight: 60Kg