用于测定粗纱的捻度，性能符合GB/T 2543.1的要求。 Used for testing the twist of roving . The properties should be in conformity with the requirement specified in GB/T 2543.1. 主要技术参数Main Technical Data 试验方法Testing Method 直接计算法 count directly method 实验长度Testing Length 0~300mm 测量范围（捻）Testing Range(twist) 1~500 外形尺寸　External Dimensions L600 W120 H220mm