Y381摇黑板机可将纱线均匀地绕在黑板上，供检查纱线的外观评级。YG381型用于棉纺、化纤纱线。YG381M型用于毛纺纱线。黑板尺寸：
YG381型2501802mm
YG381M型3002255mm


YG381 Evenness Test Machine can wrap evenly yarn on the blackboard in order to judge the appearance grade of yarn.YG381 model is suitable for cotton spinning,chemical fibre and yarn. YG381M model is for the use of woolen yarn.