... machine, such as: VU-1S Impact specimen gap manual broaching machine.Wuxi Jiebo Electrical Technology Co.,Ltd ... with V type or U type(2mm)gap broach. Specimen gap can be made per time, and operation ... simple. Finished V type and U type(2mm) gap can satisfy GB229-94, ASTM, EZ3,ISO148 ... engineering mechanical manufacturer and other physical laboratories.Specimen Gap: V type(GB229-94,ISO148)U type(2mm ...