With printing spring pull pressure testing machine is a special instrument for testing the deformation and load relationship characteristics of tensile and compression spring. The printing spring pull pressure testing machine is suitable for tensile and compression spring under a certain working length of the workload test, can also be used for rubber and other elastic components of the elastic load test.This type with printing spring pull pressure testing machine using advanced high integration of integrated microcontroller and Chinese liquid crystal display, the appearance of the metal shell, greatly improve the anti-interference ability of the system. Product Parameters: Model: ETH- 500 Power Supply: AC110-220V 50HZ/60HZ Maximum testing load: 500N/50kg (110.2lbs) Minimum resolution: 0.01N Diameter of the platen: 1.9" (48mm) Maximum free length of measurable spring: 5.9" (150mm) Length of travel of the displacement scale: 3.5" (90mm) Division value of the displacement scale: 0.01mm Indication error: ±1% Power capability (without printer): 13W Power capability (with printer): 20W Working temperature: 20±10℃ Temperature of storage and transportation:-27℃～+70℃ Relative temperature: 15%～80%RH Product size: 8.7"*11.8"*22.8" (22*30*58cm) Gross weight: 52.9lb (24kg)