This machine is used to test the shoe upper, the anti crack index of all kinds of thin leather and leather surface and the upper side of the shoe, and the test of anti - breaking deformation. The instrument frame is fixed to the periphery of the specimen, the speed of 12mm per minute by electric mode, the steel head is made from the top to the top from the top of the leather, when the surface cracks at, the height of the rise, it is the value of the determination of the crack, the force displayed by the force is the strength of the crack.
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